Red Hat Bugzilla – Bug 494797
Screen flickers after enabling desktop effects on kde-4.2.2
Last modified: 2018-04-11 05:05:31 EDT
Description of problem:
After updating to the lastest kde4.2.2 I cannot enable the desktop effects. After enabling them the screen starts flickering and thus is useless. kde4.2.1 (f11) works fine though. and kde4.2.2 on f9 works fine, too. gnome (f11) doesn't have this problem. without the effect everything works well.
Version-Release number of selected component (if applicable):
update to kde4.2.2
The screen start flickering as though it is kind of a drop-down menu. only parts of it are shown. Other parts appear when moving the mouse on them and then disapper again. the "magic-lamp" effect seems to work fine, even with partly-hidden windows.
desktop effekt on kde4.2.2 works fine
All these were tested with livecds as of 07.04.2009. the lastest gnome and kde4.2.1 work fine with desktop effect enabled. And my F9 also works with desktop effects.
Usually indicates video driver issue. What video hw/driver are you using?
This is what I thought, but gnome doesn't have this problem. And on my F9 everything is fine. I have radeon rs482 (http://www.smolts.org/client/show/pub_1ea45a8d-e70f-424f-aeab-c04eaec10b6f) with the xorg-x11-drv-ati-6.12.1-8.fc11.
> gnome doesn't have this problem
That doesn't prove anything, video driver problems always only trigger under certain conditions, so only with certain applications.
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 attach your X server config file (/etc/X11/xorg.conf, if available) and X server log file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link below.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
Created attachment 339179 [details]
Xorg.0.log - total freeze
Here is the xorg.0.log. When enabling the desktop effects in kde and starting firefox the whole system freezes. Form the last line in the file I see that the log file doesn't get updated when the system froze.
Created attachment 339180 [details]
my custmozed xorg.conf file. I haven't changed it since f8 an it's worked without problems. maybe most of the options aren't needed with f11 or are enabled by default in 6.12.1 but I haven't changed the file. The DRI and Extention sections are from the days before xorg-x11-drv-ati-0.6.9.
the same thing happens on Macbook Pro 2,1 with ATI X1600 mobility. I turn on desktop effects, the screen start to flicker and I can only see the borders of the plasma widgets. If I move the mouse over the windows some parts get revealed other parts of the window disappear in a seemingly random fashion. I've upgraded to the latest kernel, mesa and xorg-x11-drv-ati in koji, but things got even worse, now video playback got broken, too.
Note that desktop effects with KDE 4.2.2 work in Arch linux where no KMS is enabled. The driver version is the same, but possibly without custom patches.
Let me know if you need more information, it would be nice to have a fix as this is the last thing that prevents me using Fedora, which is great otherwise.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
More information and reason for this action is here:
please try mesa 7.6-0.1 from updates-testing when it lands, or grab it from koji.
i had similar problem as described above (i have xorg 18.104.22.1681-1, kde 4.2.3 xorg-ati driver 6.12.2-14 versions installed on my fedora 11, with an integrated ati radeon xpress 200 adapter). i upgraded to mesa 7.6-0.1 from the test repository, and the problem is gone kde works with the enabled effects.
i had similar problem as described above (i have xorg 22.214.171.1241-1, kde 4.2.3 xorg-ati driver 6.12.2-14 versions installed on my fedora 11, with an integrated ati radeon xpress 200 adapter). i upgraded to mesa 7.6-0.1 from the test repository, and the problem is gone, kde works fine with the enabled desktop effects.
Hi Imre, is the performace OK? For me with the radeon X1600 (M56) the performance compared to non KMS/DRI1 is just pathetic, basically unusable. Also with this setup Qt 4.5.1 crashes horribly while it works just fine on other Linuxes.
hi robert, unfortunately no. i wouldn't say it is unusable, but it is slow.
A mesa upgrade has not resolved this issue for me.
Enabling desktop effects causes minor flickering on the screen. Performing any action on a window then causes massive amounts of flickering making the screen unusable.
VGA compatible controller: ATI Technologies Inc RV516 [Radeon X1300/X1550 Series]
This ONLY occurs if I have dual-heads running.
If I don't enable and extend onto the second monitor ( via xrandr ) then the issue does not occur.
(In reply to comment #14)
> A mesa upgrade has not resolved this issue for me.
> Enabling desktop effects causes minor flickering on the screen. Performing any
> action on a window then causes massive amounts of flickering making the screen
> VGA compatible controller: ATI Technologies Inc RV516 [Radeon X1300/X1550
> This ONLY occurs if I have dual-heads running.
> If I don't enable and extend onto the second monitor ( via xrandr ) then the
> issue does not occur.
Edit : This problem was resolved by using a new pair of monitors. I can only conclude that this was due to a vsync issue or similar, although the previous F10 install had no problems.
For me, this bug is fixed with the mesa updates.
OK, can _anybody_ still reproduce this? If not, I suggest we just close this as WORKSFORME lacking precise knowledge what exactly fixed it.
I agree with closing this. Last time i tried I couldn't reproduce these specific symptoms with the new mesa package.
Per Kevin and Robert's remarks closing this as WORKSFORME. Please feel free to reopen if the problem returns.
Steven M. Parrish - KDE Triage Master
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