Just as an update from the past post.
Unfortunately, all my attempts for fixing this properly have failed so
far, the hardware does not wants to collaborate with the software for
inter-ring synchronization.
So the workaround I used previously still applies - I need to disable
compositing and use
Patch has landed in the 3.4-rc1 kernel, so closing this bug. Thank you
all for all the testing and feedback!
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https://bugs.launchpad.net/bugs/855124
Title:
As per upstream bug report, it still seems to be active.
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https://bugs.launchpad.net/bugs/386855
Title:
[i945gm] Segfault when using colorfilter plugin
To
Paulo, I think you was looking into similar issues for external outputs
on SNB in the past, could you take a look at this please?
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@Chris, this is with RC6p patches already included, this is the worst
part. I don't have any RC6-specific guesses right now to try which could
fix this from the driver side.
The memory speed guess is a very nice clue. All our rc6 stuff is playing
with voltages and moving GPU registers back and
I think Paulo was working on some KVM-related issues, so reassigning for
him to take a look.
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https://bugs.launchpad.net/bugs/873718
Title:
External monitor
So, is this bug still active or it was fixed meanwhile?
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https://bugs.launchpad.net/bugs/137234
Title:
[i945] Second display not enabled with intel video
This issue is affecting a hardware component which is not being actively
worked on anymore.
Moving the assignee to the dri-devel list as contact, to give this issue
a better coverage.
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So, just as an update here while still working on a fix.
You should not experience tearing if you disable compositing and use gl
or vaapi output. Tearing still happens with xv/x11 due to vsync not
working properly on Sandy Bridge yet, even with compositing disabled.
With compositing enabled, I
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