*** This bug is a duplicate of bug 1390587 ***
https://bugs.launchpad.net/bugs/1390587
** This bug has been marked a duplicate of bug 1390587
'xrandr --output LVDS1 --rotate inverted' causes screen splitting and
glitches
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(In reply to Ander Conselvan de Oliveira from comment #11)
(In reply to Chris Wilson from comment #10)
(There is certainly a kernel regression due to planes)
Even so, the original report makes no mention of using nightly or a very
recent kernel.
Duped the wrong bug. But since I was using
Created attachment 111520
Xorg.log with --enable-debug=full
I tried to reproduce the problem with the driver compiled with --enable-
debug=full. However, the session strangely dies after setting the
rotation. There is no error reported in the log after setting rotation
to inverted.
The log seems
** Changed in: xserver-xorg-video-intel
Status: Confirmed = Fix Released
** Changed in: xserver-xorg-video-intel
Importance: Critical = Medium
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Then update the ddx...
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https://bugs.launchpad.net/bugs/1395182
Title:
Screen tears on xrandr orientation inverted
To manage notifications about this bug go
(In reply to Chris Wilson from comment #10)
(There is certainly a kernel regression due to planes)
Even so, the original report makes no mention of using nightly or a very
recent kernel. Also, the link to github implies the problem started to
happen after an upgrade from Ubuntu 14.04 to 14.10.
(In reply to Ander Conselvan de Oliveira from comment #9)
(In reply to Chris Wilson from comment #8)
Yikes, this regression made it into a stable release.
I was actually able to reproduce this with 3.14. I tried to reproduce this
before with drm-intel-nightly on SNB, IVB and HSW, but
(In reply to Chris Wilson from comment #8)
Yikes, this regression made it into a stable release.
I was actually able to reproduce this with 3.14. I tried to reproduce
this before with drm-intel-nightly on SNB, IVB and HSW, but failed.
Turns out I needed a more recent xorg intel driver to uncover
Created attachment 111519
screenshot of the problem with kernel 3.16
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https://bugs.launchpad.net/bugs/1395182
Title:
Screen tears on xrandr orientation
Is the patch linked in comment #6 still the recommended fix?
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https://bugs.launchpad.net/bugs/1395182
Title:
Screen tears on xrandr orientation inverted
To
Yikes, this regression made it into a stable release.
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https://bugs.launchpad.net/bugs/1395182
Title:
Screen tears on xrandr orientation inverted
To manage
*** Bug 87662 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1395182
Title:
Screen tears on xrandr orientation inverted
To
** Changed in: xserver-xorg-video-intel
Importance: Medium = Critical
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https://bugs.launchpad.net/bugs/1395182
Title:
Screen tears on xrandr orientation
I believe FBC is disabled. Here's what I found in /sys:
jeff@jeff-yoga:~$ sudo cat /sys/kernel/debug/dri/0/i915_fbc_status
FBC disabled: disabled per chip default
jeff@jeff-yoga:~$ sudo cat /sys/kernel/debug/dri/64/i915_fbc_status
FBC disabled: disabled per chip default
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Thanks for that Chris. Is there a recent patch I can try that is perhaps
less sketchy and completely broken?
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https://bugs.launchpad.net/bugs/1395182
Title:
Hmm, the other question here is whether fbc is enabled?
FBC can show stale data when using 180 degree hardware rotation of the primary
display plane.
WA: Do not enable FBC when using hardware 180 degree rotation on the primary
display plane.
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** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided = High
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https://bugs.launchpad.net/bugs/1395182
Title:
Screen tears on xrandr
http://lists.freedesktop.org/archives/intel-
gfx/2014-September/052703.html
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https://bugs.launchpad.net/bugs/1395182
Title:
Screen tears on xrandr orientation
Public bug reported:
When xrandr -o inverted is run, the resulting image is split down the
middle. This happens 95% of the time; it has worked once or twice
without tearing. Rotation can be activated through unity-control-center
Display Settings rotation field, and that reliably works fine. When
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New = Confirmed
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** Bug watch added: freedesktop.org Bugzilla #86548
https://bugs.freedesktop.org/show_bug.cgi?id=86548
** Also affects: xserver-xorg-video-intel via
https://bugs.freedesktop.org/show_bug.cgi?id=86548
Importance: Unknown
Status: Unknown
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