indigocat, the next step is to fully commit bisect from xserver-xorg-
video-ati 7.5 to 7.7 in order to identify the last good commit, followed
immediately by the first bad one. This will allow for a more expedited
analysis of the root cause of your issue. Could you please do this
following https://wiki.ubuntu.com/X/Bisecting ?
Please note, finding adjacent versions is not fully commit bisecting.
It is most helpful that after the fix commit (not version) has been
identified, you then mark this report Status New.
Thank you for your help.
** Tags added: needs-bisect
** Changed in: xserver-xorg-video-ati (Ubuntu)
Status: New => Incomplete
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu.
https://bugs.launchpad.net/bugs/1610591
Title:
Video acceleration regression for Radeon Xpress 200M (r300) in xorg-
lts-xenial & xorg-lts-wily
Status in xserver-xorg-driver-ati:
Unknown
Status in xserver-xorg-video-ati package in Ubuntu:
Incomplete
Bug description:
After updating the Ubuntu HWE stack in 14.04 to Xenial (kernel 4.4 and
xserver-xorg-video-radeon-lts-xenial), system boots up fine and
responsively, but screen is laggy; there is a tremendous performance
regression in comparison to xorg-lts-vivid. Lots of video tearing that
did not occur when using xserver-xorg-video-radeon-lts-vivid.
System is an older Pentium laptop (Packard Bell EasyNote) with a Radeon
Xpress 200M chip (r300 driver). Video acceleration was working with DRI2 under
the Vivid stack (kernel 3.19-64-lowlatency +
xserver-xorg-video-radeon-lts-vivid).
I also tried upgrading to the Wily kernel (4.2.0-lowlatency), and video
acceleration works fine with the Vivid xorg.
I reported this in launchpad previously, and it was dismissed as "invalid"
since Wily is EOL.
The problem, however, persists in the Xenial stack, so I'm reporting it here.
Attached are the respective Xorg.0 logs.
To manage notifications about this bug go to:
https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/1610591/+subscriptions
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