(In reply to comment #82)
> (In reply to comment #81)
> > and applied the following patch on top of it.
> >
> > commit f49c3cacd25ffb78ccfff49b001ba89375044145
> > Author: Chris Wilson <[email protected]>
> > Date: Thu Jan 10 19:14:21 2013 +0000
> >
> > intel: Throttle harder
> >
> > Limited testing shows that the glyph corruption is gone. Unfortunately
> > performance seems to be slower too. That means for example maximizing a
> > window it does not happen instantly and I can see how it is redrawn. So
> > basically the same behavior with `"DebugWait" "true"`, if I remember
> > correctly.
>
> What I realised later was that Sitosfe was hitting the bug in libdrm-intel
> that was causing it to fallback to swrast. After applying that patch, you
> also need libdrm-intel-2.4.41 or just
> http://cgit.freedesktop.org/mesa/drm/commit/
> ?id=fdda97007b1dbf95beb16a0e3510fd36c89e8c33
>
> Paul, can you update libdrm and see if the bug returns?
I applied the commit you mentioned on top of
libdrm (2.4.40-1~deb7u2) sid; urgency=low
and rebuilt the package. Unfortunately I think there is no difference.
The glyph corruption is still gone but it is also still slow, so swrast
still might be used.
How can I check, what is used, without `glxinfo` installed? I could not
spot anything useful in `/var/log/Xorg.0.log`.
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/745608
Title:
[915GM] font corruption on Intel GMA900
Status in X.org xf86-video-intel:
Confirmed
Status in “xserver-xorg-video-intel” package in Ubuntu:
Triaged
Status in “xserver-xorg-video-intel” package in Debian:
Confirmed
Bug description:
Sometimes getting incomplete drawing of same glyphs of one font on
whole screen.
In the screenshot you can see the "e" is drawn incompletely (both
english and cyrillic too).
The bug is happening frequently and spontaneous on my Asus EEEPC 900.
(This issue affects Ubuntu's 10.10 or later. A workaround using the
DebugWait parameter is described in comment #40 -
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/745608/comments/40 ).
[lspci]
Nux: lspci: 00:02.0 VGA compatible controller [0300]: Intel Corporation
Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 04)
To manage notifications about this bug go to:
https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/745608/+subscriptions
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