The bad news is that I've just had the semaphore hang with all the read-
after-write patch applied. :|
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Considering that the only failure in the previous dmesg was the FDI link
failure, and that implies the displays would be blank, that it was fixed
it was natural for to presume the bug was fixed.
Now we find ourselves without uptodate information on what your bug is,
so please do attach the full
Out of curiosity more than anything else, can you try
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 27300d6b583b..eb2fa4b89219 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5548,6 +5548,8 @@ static void
(In reply to comment #3)
I ran intel_reg_dumper, but I am seeing:
Gen2/3 Ranges are not supported. Please use unsafe access.
BEN! You will need to build intel-gpu-tools from git (or a recent stable
release).
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Colin, just to clarify, do you mean that after an xrandr (or dpms)
off/on, everything is back to normal? No random vertical lines? That's
more or less what we expected due to enable VT switchless resume and
userspace missing its hotplug notifications, but I was still expecting
the garbage.
If you
That's because that would be NOT the same bug.
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[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001, workaround
Will someone please try
https://bugs.freedesktop.org/attachment.cgi?id=82768 with a working
mesa! :)
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Timeout.
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Title:
Display resolutions missing on external VGA display [regressing] on
12.10
Status in The Linux Kernel:
Invalid
3.8.0-27 is Ubuntu's kernel, almost 9 months behind the curve. Support
queries should be addressed to them first.
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No, the original issue (still unresolved) here is in the hardware, which
makes it a kernel problem. However, there are lots of *different* bugs
that have been also reported here that are due to regressions in
mesa/i965.
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Created attachment 82747
New read-after-write patch
New patch for testing, thanks!
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[snb] GPU lockup IPEHR: 0x0b160001
Created attachment 82748
New read-after-write patch
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This parameter 'drm.vblankoffdelay=1' does not exist in your kernel and
so specifying it causes the DRM driver not to load. Strongly suggests a
miscompilation of the kerne or a failure to build the right initramfs,
since that parameter has existed since 2.6.38 and is still present in
3.10.
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[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001,
(In reply to comment #107)
(In reply to comment #106)
(In reply to comment #104)
I'm not sure my problem is related to this bug.
Most likely it isn't - gpu hang is similar to an application crashing.
Please file a new bug report and don't forget to attach the error state
file.
(In reply to comment #107)
(In reply to comment #106)
(In reply to comment #104)
I'm not sure my problem is related to this bug.
Most likely it isn't - gpu hang is similar to an application crashing.
Please file a new bug report and don't forget to attach the error state
file.
(In reply to comment #100)
This is on an i7 4770, if that matters.
No, that's something completely new. Please open a new bug report and
attach your dmesg, Xorg.0.log and /sys/drm/card0/error from after one of
the hangs.
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(In reply to comment #100)
This is on an i7 4770, if that matters.
No, that's something completely new. Please open a new bug report and
attach your dmesg, Xorg.0.log and /sys/drm/card0/error from after one of
the hangs.
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The kernel is just the messenger here reporting that someone hung the
GPU. The details about who and how are all in the error state.
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Except that isn't a bug in the ddx, but mesa.
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Frequent hang and render glitches in Xorg, caused by SNA
Status in The Linux
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Oh that's interesting. We might be able to find a register to prevent
rc6 whilst waiting on a semaphore. (Hmm, too bad it isn't ivb or we
could just frob forcewake directly.)
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Oh that's interesting. We might be able to find a register to prevent
rc6 whilst waiting on a semaphore. (Hmm, too bad it isn't ivb or we
could just frob forcewake directly.)
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Colin, will it possible to try with drm-intel-nightly (or latest
mainline) to see if the state checker catches anything?
Also it would be interesting to read an --enable-debug=full Xorg.0.log
to see what happened to that uevent.
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(In reply to comment #17)
so I believe xrandr is sorting this out, running it manually:
king@hpmini:~$ xrandr --output LVDS1 --off
king@hpmini:~$ xrandr --output LVDS1 --auto
seems to get rid of the vertical lines.
Ok, that just confirms that the hotplug uevent that we send upon resume
is
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(In reply to comment #20)
Today's mainline kernel (top commit 85ce70fdf48aa290b4845311c2dd815d7f8d1fa5)
[ 241.352344] INFO: task systemd-udevd:381 blocked for more than 120
seconds.
[ 241.352420] Tainted: PF O 3.13.0-3-generic #18-Ubuntu
[ 241.352474] echo 0
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(In reply to comment #19)
Colin, will it possible to try with drm-intel-nightly (or latest mainline)
to see if the state checker catches anything?
Also it would be interesting to read an --enable-debug=full Xorg.0.log to
see what happened to that uevent.
Time to retry. Hopefully.
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Colin can you please also attach your Xorg.0.log? I just want to check
that it is setup to receive hotplug events - but having it available
should help any future queries.
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For the record, X has hotplug (uevents) enabled.
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HP Mini 1000 fails to resume from suspend
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*** Bug 81673 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1140716
Title:
[regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs
*** Bug 81676 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1140716
Title:
[regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs
*** Bug 81710 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1140716
Title:
[regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs
*** Bug 81844 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1041790
Title:
[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001,
*** Bug 81844 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1140716
Title:
[regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs
*** Bug 81990 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1041790
Title:
[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001,
*** Bug 82277 has been marked as a duplicate of this bug. ***
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Title:
[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001,
*** Bug 82301 has been marked as a duplicate of this bug. ***
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Title:
[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001,
One of the earlier patches is now available as a standalone module,
http://patchwork.freedesktop.org/patch/31266/ as Ville found a
suspiciously similar w/a for g4x.
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The intel_ring_setup_status_page() does a posting read anyway, so it is
not an ordering issue. So this is back in the magic read territory, can
you try with a msleep(10) instead of the read just to confirm that it is
the read doing the trick and not an extra delay?
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*** Bug 81990 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1140716
Title:
[regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs
*** Bug 82301 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1140716
Title:
[regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs
*** Bug 82277 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1140716
Title:
[regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs
*** Bug 82451 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1041790
Title:
[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001,
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