Common F19 bugs
(→Remmina - Don't permit selection of share folder on KDE Desktop Environment)
(copy yum issues across from f20 (as they exist in f19 too))
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After you start Remmina when you tried to select a local folder to share that folder on your rdp connection, the program closes and crash every time.
After you start Remmina when you tried to select a local folder to share that folder on your rdp connection, the program closes and crash every time.
Revision as of 10:57, 15 December 2013
This page documents common bugs in Fedora 19 and, if available, fixes or workarounds for these problems. If you find your problem in this page, do not file a bug for it, unless otherwise instructed. Where appropriate, a reference to the current bug(s) in Bugzilla is included.
My bug is not listed
Not every bug is listed in this page, but Bugzilla should be a comprehensive database of known bugs. This page is a sampling of the bugs most commonly discussed on our mailing lists and forums.
To see if your bug has already been reported, you can search Bugzilla. If it has not yet been reported, we encourage you to do so to help improve Fedora for yourself and others. A guide to Bugs and feature requests has been prepared to assist you.
If you believe an already-reported bug report should be added to this page because it is commonly encountered, you can:
- Add it yourself, if you have wiki access. Please follow the style and guidelines explained in the comments in the page source.
- Or, add the CommonBugs keyword to the bug report. Someone from the QA team will then inspect the issue to determine whether the bug should be listed as a common bug. To expedite your request, please add a comment to the bug that includes
- a summary of the problem
- any known workarounds
- an assessment on the impact to Fedora users
For reference, you can query Bugzilla for bugs tagged CommonBugs:
- CommonBugs? (bugs with CommonBugs keyword, but do not yet have a link to this page)
- CommonBugs+(bugs with CommonBugs keyword and contain a link to this page)
Installer screens sometimes do not appear at full screen width
Sometimes when you visit a screen in the Fedora 19 Beta installer (a 'spoke') more than once, it will display incorrectly - it will be squeezed into an area less than the full width of the screen, and sometimes less than the full height also. We have been attempting to fix this bug for a while but it is a difficult one to pin down.
Usually you can still use the screen in the reduced size version, though it may look very strange. If you get completely stuck, though, you will unfortunately be required to reboot and restart the installation process. We apologize for any inconvenience.
Sadly, we were unable to resolve this issue ahead of the final release of Fedora 19. We were unable to diagnose the cause of the issue, so without any idea how long it might take to fix or how difficult the fix may be, we could not consider adjusting the release schedule. We will attempt to make sure the issue is fixed for the release of Fedora 20.
Apple EFI Macs: EFI install alongside existing EFI installed OS (including OS X) results in you have not created a bootloader stage1 target device error
If you try to do a native UEFI install of Fedora 19 alongside a native UEFI install of OS X and re-use the existing EFI system partition, the installer will incorrectly consider the existing EFI system partition as invalid and report that you have not created a bootloader stage1 target device. Unfortunately, the Fedora automatic partitioning algorithm will actually attempt to re-use the EFI system partition, and so you will run into this bug in any Fedora 19 installation attempt where you use the automatic partitioning algorithm and do not choose to delete the existing EFI system partition.
Practically speaking, there are a few different approaches to dealing with this problem. If you do not mind losing your OS X installation, you can simply choose to delete it (including the EFI system partition), and let Fedora occupy the rest of the disk. Fedora should create a new EFI system partition and install successfully.
If you wish to preserve your OS X installation, install Fedora 19 Final, and dual boot, you must use the installer's 'custom partitioning' path. Make sure to leave the existing EFI system partition intact, but do not set a mount point for it. Do not use the Create partitions for me button. Instead, manually create a new EFI system partition, and set it to be mounted at
/boot/efi. Manually create other partitions as usual. Complete custom partitioning, and your installation should proceed successfully. See the Installation Guide for general instructions on the partitioning process, if necessary.
You could also try installing Fedora 18 or Fedora 19 Beta. These should allow you to use automatic partitioning to install alongside OS X, assuming you do not run into any other bugs they may have contained. You could then upgrade to Fedora 19 Final - with FedUp from Fedora 18, or yum from Fedora 19 Beta. You will still wind up with two EFI system partitions in this case.
We are investigating the possibility of producing an updates image to make it easier to deal with this bug. We apologize for any inconvenience it causes you.
Intel firmware RAID-1+ sets not visible in live installer
Fedora 19 testing indicates that Intel firmware RAID sets at level 1 and higher (so not level 0) fail to appear as potential target devices in the installer when running from a live image. They appear as normal when installing from a non-live image (the DVD or network installer).
This issue appears to be caused by mdmon failing to start or being killed during the live image start up. It may be possible to work around it by starting mdmon manually prior to running the installer. The other 'workaround' for the issue is simply to install from the DVD or network install image rather than a live image if you wish to install to an affected firmware RAID device.
Problems with Installation Source and Installation Destination spokes when installing from a partially complete kickstart
If you attempt to install Fedora 19 using a partially-complete kickstart - in particular, a kickstart which specifies a package set but no installation source or destination - you will find that the interactive process for setting those options behaves strangely. On the Installation Source spoke, you may not be able to use the default Closest mirror option. If you are affected by this problem, you can manually enter the URL of the Fedora 19 mirror list, and check the This URL refers to a mirror list. box. The URLs for the 64-bit and 32-bit mirror lists are
The Installation Destination spoke appears to require you to complete it multiple times to complete configuration: each time it will set another element of the configuration. Even after doing this, you may find a bootloader target disk is not selected. To set one, first enter the Full disk summary and bootloader... screen and select not to install a bootloader, and complete the spoke once again. Then complete the spoke one more time, this time selecting the correct target disk for the bootloader, and the configuration should now be complete.
As these issues take some effort to work around, it may be a better idea simply to use a complete kickstart, or at least one which specifies an installation source and destination. The Anaconda/Kickstart page should help you with the required syntax.
Storage devices without media show as 0-byte partitions and can crash the installer
Several testers have reported an unusual case with certain storage devices in the Fedora 19 installer. Some devices report themselves to the kernel as drives with 'no media present'. Identified cases so far include an Android-based phone when plugged into the system but not set in USB storage mode, and a few types of card reader when no card is inserted.
If such a device is present during installation, it will not be shown in the 'Installation Destination' screen's list of disks, but if you enter the custom partitioning mode, the device will appear as a single 0-byte partition. If you attempt to manipulate this partition in any way, the installer may crash with an error AttributeError: 'NoneType' object has no attribute 'type' .
There are two obvious workarounds for this issue. In most cases it should be possible simply to disconnect the offending device: there is no need to connect your phone or external card reader during installation. If the offending device is not easily removable, you can simply leave the bogus 0-byte 'partition' entirely alone, and your installation should proceed successfully.
Network installation with Authoring and Publishing group selected fails
Due to an unmarked conflict between two texlive-related packages (
), Fedora 19 installations with the Authoring and Publishing package group selected (and possibly with the Font design group selected) will fail.
The offending packages (and groups) are not present on the Fedora 19 DVD, so the bug is not present there. The issue affects only network installs. It will be resolved once the conflict between the two packages is fixed with an update, so long as you enable the updates repository in your installation.
UEFI install to ms-dos ('MBR') labelled disk fails with unclear errors
As veterans of the Fedora 16 release may remember, there are two commonly-used 'disk label' or 'partition table' formats known as 'gpt' and 'ms-dos' or 'mbr'.
Fedora 19's installer effectively requires that native UEFI installations be performed to a disk with the 'gpt' format (in fact, it requires that the EFI system partition be on such a disk). In fact, this is not a requirement of the official UEFI specification: it leaves open the possibility of an EFI system partition residing on an ms-dos labelled disk, though it is possible that some firmwares may not support such a configuration.
In any case, if you attempt to do a native UEFI install of Fedora 19 such that the EFI system partition will reside on an ms-dos labelled disk, this will fail. You are likely get an error of the form you have not created a bootloader stage1 target device, possibly with the note that the volume backing the EFI system partition must have one of the following disklabel types: gpt. You may also observe unusual behaviour on the Reclaim space screen, if you use it in your installation attempt. Note that you can encounter this error message even when installing to a gpt-labelled disk if you use custom partitioning and fail to correctly configure an EFI system partition: when doing a UEFI install you must include a partition of the 'EFI system partition' type, and mount it at the path /boot/efi.
We have found that there appear to be some systems 'in the wild' with existing native UEFI operating system installations to an ms-dos labelled drive. Unfortunately, this bug means you cannot install Fedora 19 in a dual-boot configuration to the same drive as such an operating system. You would need to install to a second drive in order to dual boot.
If you wish to do a native UEFI installation of Fedora 19, it must be to a gpt-labelled disk, or you must configure your installation such that all existing partitions on the disk on which the EFI system partition will reside will be deleted (doing this will cause the installer to reformat it with a gpt disk label). Note that it is not possible to change the label format of a disk in a non-destructive way: it requires a complete re-format.
For Fedora 20, we intend to revise the installer to handle this situation in a better way. We apologize for any inconvenience it causes.
As a workaround, you can append "noefi" to the kernel boot options in the GRUB menu.
As for some laptops, there is an option in BIOS to set make it use Legacy mode instead of uefi, which makes it accept disks that aren't gpt-labelled (i.e some Lenovo models).
USB stick from which install is running appears as a possible install target
In some circumstances, when you are installing Fedora 19 from a USB stick, the stick itself will show up as a possible 'target disk' on the Installation Destination screen where you choose which disk(s) to install onto. This is not intended to happen. It is not possible to install to the USB stick from which the installation is running: if you attempt to do this, the installation will fail. Naturally, therefore, we recommend you simply avoid selecting the stick on this screen.
Multipath devices disappear from Installation Destination screen second time through
If for any reason you visit the Installation Destination screen more than once during a Fedora 19 installation to a system with available multipath storage device(s), the multipath device(s) will show in the device list the first time through, but not on subsequent visits. You will still be able to find it by using the Add a disk... button, though, so you can continue with your installation.
Hidden extlinux install option works only with network install
The feature Features/SyslinuxOption provides the Fedora 19 installer with a hidden (mostly undocumented) boot parameter extlinux. If you pass this parameter, the installer will attempt to install the extlinux bootloader instead of grub2. However, this obviously requires extlinux to be available to the installer. During live and DVD-sourced installations, extlinux is not available, and any attempt to install with this parameter will fail with the error No such file or directory: '/mnt/sysimage/boot/extlinux/extlinux.conf'. The parameter will work correctly when performing a network installation. So, if you intend to use this hidden feature of Fedora 19, use the non-live installer, and ensure network repositories (or at least some repository containing the
package) is available to the installer.
Reboot after non-live install often delayed for a minute or so
After successfully completing an installation of Fedora 19 from the DVD or network installation media, you will see a button to Reboot. Sometimes, after you click this, the system will appear to hang at a console. In fact, the reboot process is just delayed; if you leave it for a minute or two, the system will reboot correctly. We do recommend you wait it out to avoid any possibility of filesystem damage, rather than forcing a reset.
'Selected' state for disks is indicated with a small and easily missed check mark
On the installer screen where you choose which disks will be used for Fedora 19 installation, disks that are selected as installation targets are marked with a fairly small black check mark in the lower right hand corner; disks that are not selected do not have the check mark.
This has been changed since Fedora 18, when disks that were selected were highlighted in blue, and now the blue highlight simply means the UI element is selected. So if you click on a disk that was previously selected as an install target, then you have just de-selected it - so the check mark goes away - but the UI element is active, so it is highlighted in blue.
Add to this that if you only have a single hard disk it will be pre-selected as an install target when you enter the page, and it has become clear that this design is confusing people. Many users have entered the screen and clicked to 'select' their single disk - in fact de-selecting it, because it was already selected, but not noticing the mistake.
Please be aware that the check mark not the blue highlight indicates the disks selected as targets. We will endeavour to improve this interface before the release of Fedora 20.
Bootloader password is required on each boot
If you set a bootloader password during installation of Fedora 19 (which is only possible when doing a kickstart-based install), the password will be required at each boot of the system. This is a change in behaviour from Fedora 15 and earlier, where the password was required only to change settings from within the bootloader.
Lawrence Lowe suggests that the --unrestricted parameter can be added to menuentry lines in the grub config file to make them available without the password being entered.
Non-GNOME initial setup utility does not warn of failure to create a user account
In Fedora 19, the new initial-setup utility (shown after a graphical install with any desktop other than GNOME if you do not create a user account during installation) does not present any kind of warning if you leave it without having created a user account. Thus it is relatively easy to arrive at a graphical login screen without any user accounts available.
The old utility would allow you to skip user account creation, but required you to click through a warning in order to do so, to ensure no-one did it inadvertently. This is also how initial-setup should behave.
We have tested that the desktops for which the new tool is used - KDE, Xfce, LXDE, MATE, and Sugar - all allow login as root, so this bug should not present any major roadblocks to accessing the installed system. However, if you do install without creating a user account, we strongly advise that you log in as root only in order to create a user account, and then immediately log out and in future always log in as the user account. Using a graphical desktop with root privileges can increase your vulnerability to remote attack, to simple mistakes having severe consequences, and to bugs caused by software not expecting to be run with root privileges.
This issue does not affect the GNOME initial setup utility: in fact, that utility will not allow you to skip user account creation at all.
Fedup: upgrade to F19 can't start without rd.luks.uuid/rd.lvm.lv/rd.md.uuid boot args
The system hangs during the reboot after running the command
fedup --network 19 from F18. F17 and F18 would boot without specifying 'rd.luks.uuid' or 'rd.lvm.lv' arguments, but F19 won't.
Under normal circumstances, the installer sets up those arguments for you, but some people who migrated from GRUB to GRUB2 by hand have *dropped* those arguments - which works fine for F17 and F18, but fails for F19.
The recommended fix is to restore the rd.luks.uuid/rd.lvm.lv/etc. arguments from your old grub.cfg. In a pinch, you can add "rd.auto=1" to your boot arguments to make dracut try to automatically set up *every* disk it finds; this isn't recommended for general use though.
Boot hangs when using NVIDIA discrete graphics on some Thinkpad models (W520, T420)
Multiple testers have reported that various Thinkpad models - including at least the W520 and T420 - that have hybrid Intel/NVIDIA graphics will fail to boot Fedora 19 when using the discrete NVIDIA graphics adapter. Using the onboard Intel adapter, Fedora will boot successfully.
Further testing indicates that this bug is an interaction between several features of these systems and of Fedora: the VT-d advanced virtualization feature, the X2APIC level APIC, and the NVIDIA adapter. If all three of these things are used together, boot fails. If any one is removed from the equation, boot succeeds.
So if you are affected by this bug, you can choose to boot with any two of those things, but not all three together. You can disable the VT-d feature and select which graphics adapter to use through the system firmware. You can disable X2APIC functionality by passing the kernel parameter nox2apic. In this way, you should be able to determine which of the features you want to use.
The kernel developers plan to address this issue in a future kernel update by blacklisting X2APIC functionality on affected systems, when the NVIDIA adapter is in use.
Transition from GDM to desktop fails on systems with old or no 3D graphics adapters
Several users have reported a problem with logging in from GDM on systems with an old, or no, 3D graphics adapter (including virtual machines). This seems to affect some virtual setups, and older graphics adapters that are blacklisted from being used for 3D acceleration of GNOME Shell: pre-i915 Intel adapters, pre-R300 (Radeon 9500) Radeon adapters, and pre-NV30 (GeForce FX) NVIDIA adapters. The effect of the bug is that, after entering a username and password, the screen remains blank grey, never transitioning to the desktop. Some testers do not seem to be affected by the problem; we are yet to pin down precisely what is causing it.
If you are affected by the problem, the simplest solution is to switch to a different login manager. The best options are likely KDM and LightDM, as they have received the most testing with the widest range of desktops besides GDM. To switch to kdm or lightdm, simply install the
package and run
su -c 'systemctl enable kdm.service' or
su -c 'systemctl enable lightdm.service' then
su -c 'systemctl disable gdm.service', then reboot. You should see the new login manager, and you should be able to log in successfully with it.
System fails to start correctly (due to qxl driver crash) when booting Fedora 19 Beta as a virtual guest on a RHEL 6 or 7 host
It has been reported that the
driver in Fedora 19 crashes during X startup when trying to boot a Fedora 19 Beta image in a virtual guest configured with qxl/SPICE graphics on a Red Hat Enterprise Linux 6.4 or 7 (pre-release) host. This likely affects earlier versions of RHEL 6, clones of RHEL 6 such as CentOS, and possibly very old (and unsupported) Fedora releases as well.
To work around this issue, configure your guest to use cirrus/VNC or vga/VNC instead of qxl/SPICE. This is really a bug on the host side rather than the guest side, and updates for RHEL should be made available soon after Fedora 19's release that should resolve this problem.
X may crash when using the qxl driver in a Fedora 19 virtual machine on a Fedora 19 host
Some testers have reported X.org crashes in Fedora 19 KVM virtual machines running on Fedora 19 hosts when using the qxl graphics driver. The issue seems to be triggered by a resolution change in the guest, but some testers have observed it happening during an installation from the KDE live image: we are not yet sure why. This issue does not seem to affect all testers, and seems to affect some worse than others.
If you find yourself suffering from this issue, there are a couple of possible workarounds. You can configure your virtual machine to use the cirrus video adapter rather than qxl and the VNC display method rather than SPICE (though this may cause issues with GNOME Shell), or you can use the Basic graphics mode option from the Fedora 19 bootloader menu (or simply pass the parameter nomodeset on the kernel command line).
An updated xorg-x11-drv-qxl package has been submitted to the updates-testing repository for testing. Users experiencing this problem are encouraged to test this update and report to Bodhi whether it solves the problem. To test the update, run this command:
su -c 'yum --enablerepo=updates-testing update xorg-x11-drv-qxl'and then reboot the guest system. Of course, this will not be useful for the initial installation of a Fedora 19 virtual machine: for that phase, try one of the workarounds mentioned above.
Crash when GNOME introductory video attempts to play
When a user logs into GNOME 3.8 (as included in Fedora 19) for the first time, a short introductory video is intended to play. Fedora 19 testing has indicated that, sometimes, there is a crash, and the video fails to play. On first login to a user account, you may notice a crash report for the /usr/libexec/gnome-initial-setup-player process. Aside from the crash report and the failure of the video to play, this bug appears to have no further consequences. We have not yet identified the circumstances under which the crash occurs.
"Updates available" notification runs online updater
Fedora 18 introduced a feature called offline system updates. Its description suggests that 'offline' updates - updates performed across a system reboot - are now the default method for graphical updating in Fedora 18 and later, at least when using GNOME. However, the feature's implementation is still somewhat incomplete: GNOME will still pop up notifications of available updates, and if you click on these notifications as you are encouraged to do, the 'online' update process (updates installed within the running system) will be launched.
This is not a major bug - the online update system still works, and while there are valid reasons why offline updates are slightly more robust, online updates are what Fedora used from Fedora Core 1 through Fedora 17 so there is no pressing reason to believe the use of online updates will be a disaster. Both mechanisms perform as intended in Fedora 19, and you can use the online update mechanism as safely in Fedora 19 as you ever did in a previous Fedora release. This note is included simply to explain the situation, in case you are confused as to what's going on.
If you want to trigger an offline update, use the "Install Updates and Restart" entry on the User menu.
biosdevname rather than systemd network interface names used by default
The Systemd predictable network interface names Feature of Fedora 19 is supposed to mean that network interface names will be set by systemd/udev following the upstream feature, rather than by the biosdevname tool which was introduced as part of the Fedora 15 consistent network device naming feature. The two systems have similar goals, but use different naming schemes.
In practice, as things have turned out with the final Fedora 19, the Fedora installer still uses biosdevname, and writes the interface names produced by biosdevname into the configuration files for each interface. The
package is also still installed by default. We therefore expect that Fedora 19 will in fact mostly behave as if biosdevname is still the system in use, both on new installations and upgrades.
This should not cause any problems, but we felt the issue was worth noting in case the question arose as to why the new feature does not seem to be working, or in case certain corner cases appear in which the two systems conflict in some way.
Several x-caja-desktop windows pop up on login to MATE desktop
Sometimes (the bug is due to a race condition and hence unpredictable), on boot of the Fedora 19 MATE live image or first login with a user account to the MATE desktop, several useless windows labelled x-caja-desktop will open up on the desktop.
The bug has no further consequences and it is quite safe to simply close the windows and continue using the system. The MATE maintainer is currently working to resolve this issue with updated packages.
Low battery warnings not showing up in LXDE
Fedora 19's original LXDE build relied on the
xmessage tool for printing 'low battery' notifications. However, this tool is not included by default in an LXDE installation (or the LXDE live image). This means that these notifications will not show up unless you manually install the
An updated lxpanel package has been submitted to the updates-testing repository for testing. Users experiencing this problem are encouraged to test this update and report to Bodhi whether it solves the problem. To test the update, run this command:
su -c 'yum --enablerepo=updates-testing update lxpanel'
X crashes on Fedora 19 32-bit VirtualBox guests with Guest Additions installed
Several testers have reported that if you install a 32-bit edition of Fedora 19 to a VirtualBox virtual machine and install the Guest Additions, X will no longer start up successfully.
Please note that Fedora does not officially support or recommend the use of the VirtualBox platform. A fix for this issue is unlikely to come from the Fedora project, but the VirtualBox developers may address it in future releases. To work around the issue, do not install the Guest Additions, or install a 64-bit edition of Fedora 19 rather than a 32-bit edition.
PHP cannot connect to MariaDB/MySQL using old password
When a MariaDB/MySQL database contains old users, created with old unsecure passwords, PHP (using mysqlnd driver) won't be able to connect:
PHP Warning: mysqli::mysqli(): (HY000/2000): mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication. Please use an administration tool to reset your password with the command SET PASSWORD = PASSWORD('your_existing_password'). This will store a new, and more secure, hash value in mysql.user. If this user is used in other scripts executed by PHP 5.2 or earlier you might need to remove the old-passwords flag from your my.cnf file ...
Which means, you MUST remove old_password=1 from /etc/my.cnf, restart MariaDB/MySQL service and set a new password for each user.
Old passwords are stored as 16 char hash (in mysql.user table), while new passwords are stored as 41 char hash (starting with a *).
After you start Remmina when you tried to select a local folder to share that folder on your rdp connection, the program closes and crash every time.
Multiple cases of "group (groupname) does not exist" errors when running yum
There are several similar and inter-related bugs in Fedora 19's Yum package manager which can cause it to print bogus warnings about groups not existing in certain circumstances. You may see any of these warning messages:
- Warning: group (groupname) does not exist.
- Warning: environment (groupname) does not exist.
- Warning: Environment Group (groupname) does not exist.
yum groupinstall (groupname),
yum install @(groupname), or
yum upgrade after having once installed any package or environment group with
yum groupinstall (groupname) or
yum install @(groupname). The most common and most visible case of this bug - where you see multiple instances of the first warning - will occur only if you have updated to yum-3.4.3-111.fc19 or higher, it does not affect earlier Fedora 19 versions of yum.
A less immediately visible but somewhat more significant issue is that, when you install an "environment group", yum fails to correctly keep track of which "package groups" were installed as a part of that "environment group" - it in fact never considers any package group to have been installed as part of an environment group. This means that running "yum group remove (environment group)" will not remove anything.
We have not yet discovered any very serious consequences of these bugs - they are mostly superficial, though they can be annoying. As far as we are currently aware, there is no possibility of data loss, or of the packaging system becoming seriously broken. It is safe to continue using your Fedora 19 system and working with packages, even if you see these messages. Some of the more advanced group functions related to the Fedora 19 "yum groups as objects" feature, however, will not perform as advertised.
Various 'workarounds' are possible, though all involve in some way interfering with the operation of the aforementioned Fedora 19 "yum groups as objects" feature. Probably the safest and most easily reversible is to run:
yum-config-manager --save --setopt=group_command=compat
This will configure yum to effectively disable the "groups as objects" feature and revert to the simple handling of groups it used prior to Fedora 19. The major drawback of this is that the
yum group remove command almost never does what you want in this configuration. Once the bugs discussed here are resolved, you can run:
yum-config-manager --save --setopt=group_command=objects
to return to "groups as objects" mode, if you wish. Another possible workaround is to run
yum group mark remove (groupname) for each affected group. This is a little more work, and also harder to reverse in future, but it is safe. It tells yum to consider the group in question as 'not installed', but will not lead to the removal of any packages unless you run a specific command or change a configuration setting.
We will work to provide updates that permanently resolve these issues as quickly as possible.
yum groups mark convert command recommended by yum results in many additional packages being installed on yum update
If you run certain yum commands, it may advise you to run a command
yum groups mark convert. This is related to the Fedora 19 "yum groups as objects" feature: it is intended to look at an existing Fedora system, work out which package groups are installed, and write that information out for the use of the "groups as objects" feature.
Testing has indicated that this command is too aggressive in determining which package groups are installed, and marks for instance groups from which only a single package is present on the system as being 'installed', even if that package was actually installed individually or as part of another group. As one of the "groups as objects" features is that not-currently-installed packages from installed groups will be added when running
yum upgrade, the result is that, on running
yum upgrade after
yum groups mark convert, yum will attempt to install many new packages, most of which you likely do not want.
If you have not yet run
yum groups mark convert, we advise for the present that you do not do so, regardless of yum's suggestion. If you have run the command and wish to prevent yum trying to install additional packages, there are several possibilities.
The easiest is to run
yum-config-manager --save --setopt=group_command=compat, which will have the effect of disabling the "groups as objects" functionality entirely, reverting yum to its pre-Fedora 19 handling of package groups. Unless you were interested in taking advantage of the "groups as objects" features, you will likely be happy with this behavior.
If you wish to try and maintain the "groups as objects" functionality (despite this bug and the others discussed above), you can run
yum group list installed hidden -v to print the list of groups that yum now believes is installed, and run
yum group mark remove (groupname) to tell yum to consider a group as 'not installed'. Do this for each of the groups you do not want, until yum no longer wishes to install additional packages you do not want.