Description of problem: - When connecting an external monitor to the VGA out, the external screen flickers. I'm using a Dell Vostro 3300 How reproducible: - Attach external monitor Actual results: - wavy, flickering screen Expected results: - Normal screen quality Additional info: - according to this links it has something to do with KMS in kernel - https://bugs.freedesktop.org/show_bug.cgi?id=28306 - https://bugzilla.kernel.org/show_bug.cgi?id=21742
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue. Please add drm.debug=0x04 to the kernel command line, restart computer, and attach * your X server config file (/etc/X11/xorg.conf, if available), * X server log file (/var/log/Xorg.*.log) * output of the dmesg command, and * system log (/var/log/messages) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above. We will review this issue again once you've had a chance to attach this information. Thanks in advance.
Created attachment 473987 [details] dmesg
Created attachment 473988 [details] /var/log/messages
Created attachment 473989 [details] Xorg.0.log
The problem has been fixed upstrem, a patch (https://bugs.freedesktop.org/show_bug.cgi?id=28306#c48) has been applied to the -next branch of the kernel, take a look here: https://bugs.freedesktop.org/show_bug.cgi?id=28306#c57 Maybe this can be applied to F14 packages too?
The patch was reverted from the linux-next branch until a proper fix appear: http://lists.freedesktop.org/archives/dri-devel/2011-February/008869.html
The issue is also available in F15 alpha.
The issue is still present in F15 Beta
Using Fedora 15 Final, kernel 2.6.38.8-32.fc15.i686 problem persists.
*** Bug 608316 has been marked as a duplicate of this bug. ***
I tried latest fully updated Fedora and Ubuntu - problem still persists.
Hello. It seems that the new patch has arisen ;) And users report that it's working: https://bugs.freedesktop.org/show_bug.cgi?id=38750 best regards
The patch works here, ¿any chance to get it in fedora soon? regards
How do I apply the patch? Or when is it going to get into distro ?
I build a rpm kernel for F15 x64 It's in my dropbox: http://db.tt/QHYT75A
Thanks, works for me, but will it be released officially ? Like an kernel update or something ? Or will it always end up to users to apply the fix ?
Any chance of a rpm for F15 i386? I'll really appreciate it... Hopping it becomes merged on the main kernel branch.
Any idea when is it getting merged ?
Well, priority is set to low, and only 9 users reported this, so i guess the patch will not be merged by RH, if we are lucky it will be merged in main kernel. In addition the patch doens't works in 2.6.40.x
I've upgraded my laptop to Fedora 16 last week and I have still the wavy, flickering screen on a external screen. Someone know when this problem get solved?
It's fixed in linux 3.2, see: https://bugs.freedesktop.org/show_bug.cgi?id=38750#c39
May somebody provide a backport to kernel 3.? so we can test it Regards
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