Bug 102510

Summary: video tearing ati radeon 9550 (r300) xf86-video-ati-7.9.0
Product: xorg Reporter: Branko <bagzy92>
Component: Driver/RadeonAssignee: xf86-video-ati maintainers <xorg-driver-ati>
Status: RESOLVED MOVED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg
none
glxinfo
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xorg.log none

Description Branko 2017-09-01 14:44:09 UTC
Created attachment 133928 [details]
dmesg

I have video tearing in Gentoo linux with ATI Radeon 9550 256mb (r300), installed driver is xf86-video-ati-7.9.0, same problem with 7.8.0.

I have tried to enable 'Option "TearFree" "on"' but that doesn't help. With TearFree enabled i also get complete system freeze on logout from xfce to tty.
Comment 1 Branko 2017-09-01 14:44:53 UTC
Created attachment 133929 [details]
glxinfo
Comment 2 Branko 2017-09-01 14:45:10 UTC
Created attachment 133930 [details]
xorg.log
Comment 3 Michel Dänzer 2017-09-05 01:15:31 UTC
What exactly do you mean by "video tearing", and under what circumstances (fullscreen or windowed, which desktop environment / window manager, ...) does it occur?

Note that you can enable and disable TearFree at runtime via

xrandr --output DVI-0 --set TearFree on # or off / auto
Comment 4 Branko 2017-09-05 08:06:18 UTC
(In reply to Michel Dänzer from comment #3)
> What exactly do you mean by "video tearing", and under what circumstances
> (fullscreen or windowed, which desktop environment / window manager, ...)
> does it occur?
> 
> Note that you can enable and disable TearFree at runtime via
> 
> xrandr --output DVI-0 --set TearFree on # or off / auto

That happens everytime when GPU is on some load (i think). When firefox loading some site, desktop and terminal text flickering, also when playing video in vlc or mplayer text also flicker.

Im on Gentoo linux running Xfce desktop environment.

I have tried to enable DRI3, TearFree, some other options...and nothing helps.

I have discovered something:
1600x900 - tearing
1680x1050 - no tearing
1920x1080 - tearing
Comment 5 Branko 2017-09-05 13:36:03 UTC
Also, text flickering in firefox on loading pages...
Comment 6 Michel Dänzer 2017-09-06 07:10:56 UTC
"text flickering" doesn't sound to me like what "tearing" usually refers to, and your description leaves me unsure what exactly the symptoms look like. It might help if you could provide a video or at least screenshots / photos showing the problem.

Does the problem also occur with a different desktop environment / window manager than XFCE, or if you disable / enable compositing in XFCE?
Comment 7 Branko 2017-09-06 07:59:29 UTC
(In reply to Michel Dänzer from comment #6)
> "text flickering" doesn't sound to me like what "tearing" usually refers to,
> and your description leaves me unsure what exactly the symptoms look like.
> It might help if you could provide a video or at least screenshots / photos
> showing the problem.
> 
> Does the problem also occur with a different desktop environment / window
> manager than XFCE, or if you disable / enable compositing in XFCE?

It's weird but it's not visible on screenshot and i have tried to record it but my camera doesn't see it. Everything looks normal on camera. 

I have tested with manjaro-xfce and kdeneon and it has same issue. On Windows there's no problems. I have tried to enable/disable composing and it's the same.
Comment 8 Branko 2017-09-08 14:00:17 UTC
It seeems like it's about aspect ratio or something like that.

1600x900 - flickering
1680x1050 - no flickering
1920x1080 - flickering

There are no problem on windows.

I have tried xf86-video-ati-7.10.0, but no changes.
Comment 9 Branko 2017-09-08 20:02:58 UTC
I have fixed this text flickering by lowering monitor 'phase' setting.
Comment 10 Martin Peres 2019-11-19 08:01:02 UTC
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