This bug has been reported on the Ubuntu ISO testing tracker.
A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/745608
** Tags added: iso-testing
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I ran into this bug on a fresh install of Debian 8 (Jessie) RC2 on an
EeePC 701 4G with Intel i915GM graphics. Linux kernel 3.16, X.Org
1.16.4, X.Org intel module 2.21.15.
Using SNA instead of UXA, as suggested above, seems to still solve it:
# cat /etc/X11/xorg.conf
Section Device
** Changed in: xserver-xorg-video-intel
Status: Confirmed = Fix Released
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Title:
[915GM] font corruption
I don't see this in Ubuntu 14.04 as it uses SNA and UXA is going to die
so I think we can finally close this.
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Created attachment 93732
Screenshot 2 of 5, terminal filled with X's, corruption changes after scrot
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Title:
Created attachment 93731
Screenshot 1 of 5, terminal filled with X's, corruption changes after scrot
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Title:
Created attachment 93730
Screenshot 1 of 5, terminal filled with X's, corruption changes after scrot
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Title:
Created attachment 93733
Screenshot 3 of 5, terminal filled with X's, corruption changes after scrot
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Title:
Created attachment 93734
Screenshot 4 of 5, terminal filled with X's, corruption changes after scrot
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Title:
Created attachment 93736
Log files dmesg + Xorg,0,log showing machine info for screenshots above
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Title:
[915GM]
Created attachment 93735
Screenshot 5 of 5, terminal filled with X's, corruption changes after scrot
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Title:
Screenshots and logs for linux.testing.mara...@gmail.com are on a system running
Kernel 3.11.0-12-generic #19-Ubuntu
xorg-intel 2:2.99.904-0ubuntu2
SNA is on: intel(0): SNA initialized with Eaglelake (gen4.5) backend
Chipset is a Q45/Q43.
linux.testing.marantz:
I've add you to the CC list of this
Had this same issue. Workaround in #167 works for me.
Ubuntu Raring on Dell Latitude E4300. Intel GM45 video card (i915
module)
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Years ago I applied the solution described here
http://askubuntu.com/a/49941/16023
I'm still on precise (not raring).
Lately, the issue's been cropping up more often again.
What's the latest consensus on how to resolve this issue in precise ?
Anything else worth trying?
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I have removed xorg-x11-drv-intel thinking it would fall back to
xorg-x11-drv-vesa but it seems to have fallen back to i915 from the
kernel. Is this correct?
Anyway, the font corruption issue disappeared.
What is the difference between using the driver from xorg-x11-drv-intel
and the one from
(In reply to comment #88)
I have removed xorg-x11-drv-intel thinking it would fall back to
xorg-x11-drv-vesa but it seems to have fallen back to i915 from the kernel.
Is this correct?
No. I guess you are using xorg-x11-drv-modesetting as that is the modern
fallback.
Anyway, the font
*** Bug 65433 has been marked as a duplicate of this bug. ***
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Title:
[915GM] font corruption on Intel GMA900
Not an issue for raring (due to it using SNA).
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Triaged = Fix Released
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(In reply to comment #83)
(In reply to comment #82)
(In reply to comment #81)
[…]
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
(In reply to comment #84)
Basically inspect 'sudo perf top' for pixman functions.
Alright.
There is a slim chance you trigger bug 59711 (as in I have no idea what that
is about...) and end up with something in the Xorg.log.
Unfortunately with two patches applied, using `xrandr` to enable the
(In reply to comment #76)
Sitsofe reports that commit 441ef916ae6569c88b3d6abaf7fea4d69be49d76
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Thu Jan 10 19:14:21 2013 +
intel: Throttle harder
does improve matters, but I'm still at a loss to explain why.
Finally I got
(In reply to comment #81)
and applied the following patch on top of it.
commit f49c3cacd25ffb78ccfff49b001ba89375044145
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Thu Jan 10 19:14:21 2013 +
intel: Throttle harder
Limited testing shows that the glyph
(In reply to comment #82)
(In reply to comment #81)
and applied the following patch on top of it.
commit f49c3cacd25ffb78ccfff49b001ba89375044145
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Thu Jan 10 19:14:21 2013 +
intel: Throttle harder
Basically inspect 'sudo perf top' for pixman functions. There is a slim
chance you trigger bug 59711 (as in I have no idea what that is
about...) and end up with something in the Xorg.log.
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Sitsofe reports that commit 441ef916ae6569c88b3d6abaf7fea4d69be49d76
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Thu Jan 10 19:14:21 2013 +
intel: Throttle harder
does improve matters, but I'm still at a loss to explain why.
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*** Bug 37782 has been marked as a duplicate of this bug. ***
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Title:
[915GM] font corruption on Intel GMA900
*** Bug 49396 has been marked as a duplicate of this bug. ***
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Title:
[915GM] font corruption on Intel GMA900
*** Bug 39851 has been marked as a duplicate of this bug. ***
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Title:
[915GM] font corruption on Intel GMA900
*** Bug 55881 has been marked as a duplicate of this bug. ***
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Title:
[915GM] font corruption on Intel GMA900
Sitosfe, if you get a chance, please could you try -intel.git (or
2.20.18)? I've implemented stricter throttling, so I am wondering if
that worksaround the issue like DebugWait.
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I have the same issue running DELL Latitude D430 with Intel Mobile
945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller.
I can confirm, that SNA workaround fixes the issue.
$ cat /etc/X11/xorg.conf
Section Device
Identifier Card0
Driver intel
Option
Ok I've built the intel driver on the git branch (the log mentioned it
was version 2.20.16) mentioned and the problem is still there.
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Created attachment 71919
Flush around glyph updates
Rushed.
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Title:
[915GM] font corruption on Intel GMA900
Created attachment 71918
Flush around glyph updates
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Title:
[915GM] font corruption on Intel GMA900
Status in
Created attachment 71944
Disable glyph cache
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Title:
[915GM] font corruption on Intel GMA900
Status in X.org
Created attachment 71949
Screenshot of patched driver with filled in glyphs
If you look at this screenshot which is using the patch on
http://paste.debian.net/218151/ you will see that some blocks have lines
through them
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Created attachment 71953
Screenshot 2 of patched driver with filled in glyphs
This was taken using the patch on http://paste.debian.net/218164/ but no
errors were logged...
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I've pushed a tree to remove some of the optimisations to see if they
are the cause of the corruption:
http://cgit.freedesktop.org/~ickle/xf86-video-intel #glyph-cache-bug
Can you please try this branch to see if does the trick?
Rough guide to testing:
$ git clone
Chris:
I'm going to struggle to even test your simple patch. How easy is it to cross
compile this on a 64 bit Fedora for a 32 bit Ubuntu with a different xorg?
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Nigh-on impossible unless you have the entire build environment for your
target as well (-intel will depend upon the X server ABI as defined in
the headers, which of course vary over time).
Don't worry the fix is just to switch to SNA, which will happen soon
enough.
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SNA does work for me (I just hadn't tested it on the previous run).
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Title:
[915GM] font corruption on Intel
To be honest, I had hoped that this would have proven to be the
unfenced-BLT bug. The known w/a for UXA is to enable DebugWait, which
implies that UXA is not handling its domains correctly.
The most likely candidate is:
diff --git a/src/intel_uxa.c b/src/intel_uxa.c
index 76a3146..40e3b67 100644
** Changed in: xserver-xorg-video-intel
Status: Incomplete = Confirmed
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Title:
[915GM] font corruption on
It's not fixed in Ubuntu 12.10 (I've just tested):
xserver-xorg-video-intel 2:2.20.9-0ubuntu2
linux-image-3.5.0-17
but in a downstream bug ( https://bugs.launchpad.net/ubuntu/+source
/xserver-xorg-video-intel/+bug/745608/comments/155 ) people mention that
using SNA resolves the issue.
Jesse:
I didn't have a specific change in mind, I guess SNA doesn't work for
you though?
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Title:
[915GM] font
Any update? Maybe the latest one is fixed after all?
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Title:
[915GM] font corruption on Intel GMA900
Status in
** Changed in: xserver-xorg-video-intel
Status: Confirmed = Incomplete
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Title:
[915GM] font corruption on
Stil happens in Ubuntu 12.10.
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Title:
[915GM] font corruption on Intel GMA900
Status in X.org xf86-video-intel:
For me using sna in Quantal Kubuntu solved the problem.
I also have the impression that my screen update rate with 'desktop
effects' is higher.
Win - win.
Ferry
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Ferry,
Could you please post some more detail? What is sna? What libs drivers
are you using? E.g. mesa / opengl, intel video, vaapi..
I'm just trying to shine up my own quantal desktop here. Thanks much!
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Hello Sean,
Like I said, using Quantal. You can easily lookup the versions in
packages.ubuntu..com.
To use sna (Sanday Bridge New Acceleration) I created and xorg.conf
containing:
Section Device
Identifier Card0
Driver intel
Option AccelMethod sna
EndSection
(courtesy
Still happens on fedora 17.
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03)
kernel-PAE-3.6.2-4.fc17.i686
xorg-x11-server-Xorg-1.12.3-2.fc17.i686
xorg-x11-drv-intel-2.20.8-1.fc17.i686
(In reply to comment #55)
With sna accel X crashes occasionally.
Tell me more. New bug, and make sure you have 2.20.12.
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According the changelog there are no changes related to sna in 2.20.11
and 2.20.12, but 2.20.10 are still crashing. It happens when closing
nomachine nx client window, for example. Should I test and report with
2.20.12 anyway?
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(In reply to comment #59)
I mentioned that there was a fix for a potential crash in 2.20.12 which
being the only reported at the time I'm optimistic that it is also the one
afflicting you.
Built 2.20.12 - still the same :( I can try to rebuild with --enable-
debug=full, open a new bug and
(In reply to comment #56)
(In reply to comment #55)
With sna accel X crashes occasionally.
Tell me more. New bug, and make sure you have 2.20.12.
Unfortunately fedora 17 has only 2.20.10 in updates-testing. Have to
compile myself then.
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(In reply to comment #58)
According the changelog there are no changes related to sna in 2.20.11 and
2.20.12, but 2.20.10 are still crashing. It happens when closing nomachine
nx client window, for example. Should I test and report with 2.20.12 anyway?
I mentioned that there was a fix for a
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