Common F18 bugs
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(add 856256 (crash on unlock GNOME in kvm))
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== Software issues ==
== Software issues ==
Revision as of 03:29, 18 September 2012
This page documents common bugs in Fedora 18 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 reformats target disks without warning
The Anaconda installer for Fedora 18 will format the entire disk unless custom partitioning is selected.
In Fedora 18 Alpha, if you select a disk or disks to which to install Fedora in the Installation destination screen and hit 'Continue' at the 'INSTALLATION OPTIONS' dialog without checking Let me review & customize the partitioning of the disks anyway, then complete the installation, the installer will reformat all disks selected without any further warning. There is no option presented to use free space on the disks or resize existing partitions, all existing data on the disks will be lost.
Checking the Let me review & customize the partitioning of the disks anyway box allows you to enter the custom partitioning screen, where you may be able to create a viable layout without destroying existing data. Be aware, however, that the custom partitioning screen is far from complete and known to be buggy. We strongly advise you to install Fedora 18 Alpha only on systems or virtual machines which contain no data of value to you.
This is not the final design of the partitioning process for Fedora 18, and it will be improved for the Beta and Final releases.
Reboot fails after live installation
Multiple testers reported that, after completing a live installation of Fedora 18 Alpha, rebooting fails. If you hit Esc to see the console messages, you will see 'Dependency failed for Reboot.' and, at the end, 'Reached target Shutdown.'
Once the system has reached this point it is quite safe to hit the physical reset button or turn the power off. There is no known workaround for the issue besides simply rebooting or powering off manually.
Problems with start or display of login manager or desktop on NVIDIA graphics adapters
There is a problem in the nouveau kernel module in Fedora 18 Alpha which can cause various symptoms that ultimately prevent you from reaching a usable desktop, when booting the live image or an installed system. The login manager and/or desktop may fail to appear at all (though ps and systemctl will show that they are running), or they may appear but with the cursor missing and/or visual corruption issues.
To work around this issue for live system boot or first boot of an installed system, edit the kernel parameters at boot time and remove 'rhgb'. This should result in a fully working boot.
An updated kernel 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 kernel'
GNOME crashes when unlocking screen (usually in a KVM)
When running Fedora 18 Alpha in a KVM virtual machine using the 'qxl' video adapter and 'xorg-x11-drv-qxl' video driver, using the GNOME desktop, if the screen is locked either by the user or after an inactivity timeout, GNOME will crash back to the login screen a few seconds after the screen is unlocked.
Note that a few reporters have reported similar behaviour with other video adapters and drivers (on real machines, not virtual ones), but these issues likely have different causes and should be reported separately.
To workaround this issue you can disable screen locking, or - if you require screen locking - use a different video adapter and/or driver in the virtual machine, which will allow you to use screen locking but give you poorer video performance. The combination of the 'cirrus' adapter and the 'xorg-x11-drv-modesetting' driver also has problems, so if you are going to use an alternative combination, we recommend the 'vga' adapter.
Some testing suggests that updating to the latest GNOME packages from the updates-testing repository may resolve this issue.