screen corruption

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Tonglebeak · Post by **Tonglebeak** » Thu Aug 12, 2010 7:07 pm

Nvidia-drivers 256.44
Xorg-server 1.8.2
kernel 2.6.35-gentoo
KDE 4.4.5
~amd64

I have a weird redraw problem going on. I mainly notice this in Firefox, but I've seen it in Konversation as well. Whenever the screen scrolls, there's a chance that parts of the screen will lag behind and not redraw (this seems to occur more with images). This causes a lot of artifacts and such (not in the overheating sense.) The only way to workaround the problem, is to force the screen to redraw itself (such as highlighting text, or dragging another window across it).

I don't even know where to begin. Everything seems to be set correctly (opengl set to nvidia, etc). This happens with both the kwin composite manager on and off.

Zhaozhou · Post by **Zhaozhou** » Sat Aug 14, 2010 9:43 am

Anything particular in dmesg or Xorg.log?
Also, post "glxinfo | grep 'render'".

d2_racing · Post by **d2_racing** » Sat Aug 14, 2010 2:54 pm

Indeed, do you see anything inside your dmesg or Xorg.log when that happens.

Where did you pick your nvidia-drivers ?

szensz-siempre · Post by **szensz-siempre** » Wed Aug 18, 2010 11:50 am

Hi Tonglebeak,

Did you ever figure out what was causing this behaviour?

I have the same problem and it can be really frustrating. It happens with konsole, openoffice, dolphin, and a range of other apps. Basically, you need to move the window or make sure the cursor goes over the area affected in order for it to refresh to what is should be displaying. I am running xorg-server-1.7.7-r1, nvidia-drivers-196.36.24, and kde-4.4 from portage.

How far have you gotten towards solving this?

Zhaozhou · Post by **Zhaozhou** » Thu Aug 19, 2010 6:48 pm

Is the issue still there if you start another window manager?

vexatious · Post by **vexatious** » Tue Aug 24, 2010 5:40 am

When I used ICEWM I had a similar problem which was actually worse!

Top quarter of screen stops refreshing while the rest looks fine. When I move a window to the upper portion of the screen it gets covered up! Anything that goes to the upper portion of the screen is hidden and I can't see a darn thing until I move it towards the bottom.

Now I use xfce4 which is fine but!

It's gotten worse since I've emerged audacious and used the oss output plugin (alsa-oss module). I get static noise on mp3's (flac's play fine?!) and then the screen gets corrupt not only on the top portion but also the sides and the bottom! This leaves me with just a tiny view area in the very center of the screen! The analyzer-spectrum (not the plugin spectrum) doesn't even work with either oss or alsa output. When I do enable the spectrum analyzer plugin it gets garbled up and instantly corrupts most of the rest of my screen.

Luckily this can get fixed by changing my resolution and changing it back to the one I was using or simply using alsa output. It sucks though not being able to use the oss output (alsa-oss module) which provides me with bit perfect playback (no need for resampling) and I still have no analyzer-spectrum (not the plugin).

BTW my gentoo install is fairly recent (yesterday) and fresh. I'm running a Geforce 5900 ultra btw with latest legacy 177X drivers. I did screw up first by not masking the nvidia drivers and installed the latest 190X drivers and emerging the X server that way. But then I re-emerged nvidia-drivers (only nvidia-drivers) after masking and then eselect opengl set nvidia. Nvidia-settings show glx module as loaded and I can hear the fan turning down after startx (xfce4). So don't know if this had anything to do with it. Also in nvidia-settings I can't change the resolution from there; I get Unable to load X Server Display Configuration page: Failed to query NoScanout for screen 0. So yeah...

Gh0str1d3r · Post by **Gh0str1d3r** » Tue Aug 24, 2010 6:44 am

I have this problem with a completely different setup:

Intel GMA 4500 graphics
kde-4.5
kernel-2.6.35-rX
xorg-server-1.8.2

It does not happen with kernel-2.6.33, so I am using that kernel.

d2_racing · Post by **d2_racing** » Tue Aug 24, 2010 12:16 pm

Are you using any kms feature ?

Gh0str1d3r · Post by **Gh0str1d3r** » Tue Aug 24, 2010 3:20 pm

d2_racing wrote:Are you using any kms feature ?

yes I am using kms with xf86-video-intel-2.12.0

thumper · Post by **thumper** » Wed Aug 25, 2010 4:19 pm

Thought I'd chime in here;
Same problem here, Firefox has the worst of it, requiring refreshing often to read long pages after scrolling down.

gentoo-sources-2.6.35-r4
xf86-video-ati-6.13.0
xorg-server-1.7.7-r1
kde 4.4.5
qt-gui-4.6.3 with raster use flag
amd64 mostly stable
Not using KMS
Composting is active, most effects have been turned off

George

Gh0str1d3r · Post by **Gh0str1d3r** » Wed Aug 25, 2010 4:43 pm

can anyone else confirm that this is a kernel-2.6.35 issue?

vexatious · Post by **vexatious** » Thu Aug 26, 2010 6:34 am

i'm using kernel-2.6.34-gentoo-r1.

Haven't noticed any screen corruption with lxde and/or openbox by itself. In windowmaker it occurs just as often as icewm (why the light wm's?). Sucks too cause window maker is my favorite window manager (I like those box things that windows minimize to). This doesn't occure on slackware using the 2.6.33.4 kernel (will update soon).

Also forgot to mention that icon corruption occurs all the time with icewm. What's going on here?

szensz-siempre · Post by **szensz-siempre** » Tue Sep 14, 2010 2:20 pm

Gh0str1d3r: I don' think that it is specific to only that kernel version, I am using gentoo-sources 2.6.34-r1.

I get this with compiz and when just using kwin.

Has anyone reported this as a bug? There doesn't seem to be any forward movement here on the forums.

Gh0str1d3r · Post by **Gh0str1d3r** » Tue Sep 14, 2010 4:44 pm

szensz-siempre wrote:Gh0str1d3r: I don' think that it is specific to only that kernel version, I am using gentoo-sources 2.6.34-r1.

I get this with compiz and when just using kwin.

Has anyone reported this as a bug? There doesn't seem to be any forward movement here on the forums.

I did not test 2.6.34, but you are right, now these corruptions are as well present with 2.6.33. But only with composition enabled...

Abraxas · Post by **Abraxas** » Sat Sep 18, 2010 4:22 pm

I am having similar issues and I am using an Intel card (using KMS) with Compiz and it happens with xorg-server 1.7.7-r1 and kernel 2.6.32. This was never a problem before but it just started cropping up recently. It seems to get much worse when there is heavy disk activity. For example if I run revdep-rebuild and try to type something into a terminal almost every character just ends up looking like a cursor block.

krcroft · Post by **krcroft** » Mon Oct 04, 2010 4:46 am

Just want to report it here as well, and is also the first time I've seen this. It's most noticeable in firefox where individual lines of text will distort. Clicking and dragging to highlight with the mouse fixes the text (probably because are redraw is forced on the area).

kernel vanilla 2.6.34.7
xorg-server 1.7.7-r1
intel 2.12
pixman 0.18.2
libxdamage 1.1.3
pango 1.28.1
xrender 0.9.6

I'm using relatively conservative CFLAGS:
CFLAGS="-march=native -Os -mssse3 -mfpmath=sse -fomit-frame-pointer -pipe