Needs retesting.
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
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Title:
Heavy black flickering with
** Changed in: linux
Status: Incomplete => Won't Fix
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Title:
Heavy black flickering with Intel graphics after VT s
** Bug watch added: freedesktop.org Bugzilla #90896
https://bugs.freedesktop.org/show_bug.cgi?id=90896
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Title:
Heavy b
Created attachment 116362
dmesg.txt
(In reply to Ander Conselvan de Oliveira from comment #3)
> Probably a duplicate of bug 90508. Could you give the patch referenced there
> a try?
Bug #90508 is fixed in kernel-4.0.4-301. I'm using kernel-4.0.4-303 and
I still got that issue.
Fedora 22 Workstat
(In reply to Ander Conselvan de Oliveira from comment #5)
> Francesco, please open a separate bug report and include dmesg with
> drm.debug=0xe from boot to the point where you get the FIFO underrun.
Done.
Here's the link (in the case they could be related somehow):
https://bugs.freedesktop.org/s
Francesco, please open a separate bug report and include dmesg with
drm.debug=0xe from boot to the point where you get the FIFO underrun.
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Probably a duplicate of bug 90508. Could you give the patch referenced
there a try?
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Title:
Heavy black flickering with I
** Changed in: linux
Status: Confirmed => Incomplete
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Title:
Heavy black flickering with Intel graphics after VT s
** Summary changed:
- Heavy black flickering with Intel graphics after VT switching from X
+ Heavy black flickering with Intel graphics after VT switching from X to Mir
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Launchpad has imported 3 comments from the remote bug at
https://bugs.freedesktop.org/show_bug.cgi?id=88944.
If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
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** Bug watch added: freedesktop.org Bugzilla #88944
https://bugs.freedesktop.org/show_bug.cgi?id=88944
** Also affects: linux via
https://bugs.freedesktop.org/show_bug.cgi?id=88944
Importance: Unknown
Status: Unknown
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WORKAROUND:
Switch to a different VT (other than X or Mir) before switching to Mir. That
will avoid triggering the bug. It only happens if you're coming from the X VT.
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Also confirmed it doesn't matter which version of Mir I try; the bug is
still present. This one is all kernel.
** Changed in: mir
Milestone: 0.12.0 => None
** Changed in: mir
Status: Confirmed => Invalid
** Changed in: mir (Ubuntu)
Status: Confirmed => Invalid
** Summary chang
William Hua, the issue you are reporting is an upstream one. Could you
please report this problem to the appropriate mailing list (intel-
g...@lists.freedesktop.org) by following the instructions verbatim at
https://wiki.ubuntu.com/Bugs/Upstream/kernel ?
Please provide a direct URL to your e-mail
** Tags removed: needs-bisect
** Tags added: bisect-done
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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Kernel bisection yielded this as the culprit:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c51f71679042a5f388d9580ffbede14c897f1e86
Might try to bisect that branch, but it might be more difficult to test.
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Weirdly the bug only happens on VT switching directly from X (VT 7). If
you switch to some other VT before Mir's then there's no flickering.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mir (Ubuntu)
Status: New => Confirmed
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Confirmed on Ivy Bridge. I can see the bug now :)
** Changed in: mir
Status: New => Confirmed
** Changed in: mir
Milestone: None => 0.12.0
** Summary changed:
- Heavy black flickering after VT switching on Intel Ironlake Mobile.
+ Heavy black flickering after VT switching on Intel gr
Certainly Mir's page flipping logic changed a bit in Mir 0.10 (faster).
However, this bug doesn't occur on any other GPU (even tried several
intel GPUs), and if the cursor is flickering then it's likely a kernel
bug.
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Touch s
Oops, sorry, that should be a .ogv extension...
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Title:
Heavy black flickering after VT switching on Intel Ironlake Mobil
Sorry, video is a bit big.
- switched to VT 1
- started mir_demo_server (no flickering yet)
- switched to VT 7
- switched to VT 1 (flickering is apparent, as seen by cursor)
- switched to VT 7
- started gedit under the mir backend
- switched to VT 1 (flickering is apparent, as seen by cursor and g
William,
Can you post a video of the flickering? That's often helpful for us to identify
the kind of problem it might be.
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William Hua, the next step is to fully commit bisect from kernel 3.16.7
to 3.18 in order to identify the last good kernel 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
Still occurs with 3.19.0-031900rc6-generic :(
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Title:
Heavy black flickering after VT switching on Intel Ironlake Mobile.
William Hua, could you please test 3.19-rc6 and advise to the results?
** Tags removed: black demo flicker kernel kernel-bug-exists-upstream mir server
** Tags added: kernel-bug-exists-upstream-3.19-rc4 needs-upstream-testing
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
-
** Tags added: bios-outdated-1.40
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Title:
Heavy black flickering after VT switching on Intel Ironlake Mobile.
Status in
Re: Comment #35
By laggy pointer you mean laggy in X? That would indicate it's falling back to
software rendering and a software cursor.
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Sorry, I wasn't specific enough. I meant I used the
3.19.0-994.201501130205 kernel from comment #28 of LP: #1408593. The bug
doesn't exist there, however I have a very laggy pointer from that one
which seems to be a new regression.
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The 3.19.0-994-generic is the daily build. That may indicate that this
will be fixed in 3.19-rc5. Were you also able to test the test kernel
in comment #28 of bug 1408593 ?
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Thanks Joseph,
The bug still exists with 3.19.0-031900rc4-generic.
The bug does not exist with 3.19.0-994-generic. However the pointer is very
laggy.
I think I can only revert to 3.16.7-031607.201410301735 in the mean
time...
** Tags added: kernel-bug-exists-upstream
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Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.19 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix t
Does this bug also go away with the test kernel in comment #28 of bug
1408593
** Tags added: kernel-da-key
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Title:
Heavy
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
Heavy black flickering after VT switching on
apport information
** Attachment added: "UdevLog.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299200/+files/UdevLog.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299190/+files/CurrentDmesg.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299195/+files/ProcInterrupts.txt
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apport information
** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299198/+files/RfKill.txt
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apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299189/+files/CRDA.txt
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299197/+files/PulseList.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299201/+files/WifiSyslog.txt
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apport information
** Attachment added: "BootDmesg.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299188/+files/BootDmesg.txt
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apport information
** Tags added: apport-collected vivid
** Description changed:
- After running mir_demo_server on VT 1, when I switch to VT 7 then back
- to VT 1, the demo server really flickers black quite a lot (entire
- screen, pointer included). I'm not sure, but I also upgraded my kernel
apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299193/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299196/+files/ProcModules.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299199/+files/UdevDb.txt
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apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299194/+files/ProcEnviron.txt
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apport information
** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299191/+files/IwConfig.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1409133/+attachment/4299192/+files/Lspci.txt
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This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 1409133
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a commen
Actually, no...
William: Can you please re-run "apport-collect 1409133" when the /broken/
kernel version is running?
The command should work now this bug has a kernel task.
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See comment #1 onward.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Changed in: linux (Ubuntu)
Status: Confirmed => New
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https:/
This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 1409133
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a commen
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Title:
Heavy black flickering after VT switc
Daniel, thanks, you're completely right. I downgraded my kernel to
3.16.7-031607-generic and the flickering problem went away. Definitely
wondering if it has something to do with bug LP: #1408593 which also
affected me when I upgraded to 3.18.
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You say the hardware pointer is flickering too? That's rendered entirely
by the kernel so this sounds like a kernel driver bug.
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Thanks. That is indeed a processor family I don't have myself to test
with. But I'll work on that.
** Changed in: mir
Status: Incomplete => New
** Changed in: mir (Ubuntu)
Status: Incomplete => New
** Changed in: mir
Importance: Undecided => High
** Changed in: mir (Ubuntu)
/proc/cpuinfo (couldn't attach it for some reason):
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 37
model name : Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz
stepping: 2
microcode : 0x9
cpu MHz : 1333.000
cache size : 3
Running mir_proving_server (0.10) as root doesn't show any output other
than:
[1421162423.862128] (II) SharedLibrary: Loading libmirplatform5driver.so
[1421162424.018693] (II) DisplayServer: Mir version 0.10.0
[1421162424.027428] (II) GLRenderer: GL vendor: Intel Open Source Technology
Center
[14
Also can you provide CPU information? (/proc/cpuinfo)
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Title:
Heavy black flickering in mir_demo_server
Status in Mir:
Thanks. Can you also paste the log output you get (from 0.10) when
running mir_proving_server? It contains important information about the
system.
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Not sure if this will help much, but when I downgraded to Mir
0.9.0+15.04.20141125-0ubuntu2, the mir_demo_server_shell works again
(feels a bit slower than before though for some reason). So I guess the
problem isn't with the kernel I booted.
Also, these are my video card details:
00:02.0 VGA com
It only pops up a dialog saying "No additional information collected."
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Title:
Heavy black flickering in mir_demo_server
Yes, it should provide useful information about your software and
hardware, that we need.
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Title:
Heavy black flickering
Will apport-collect provide any information in the case that the server
doesn't crash? I ran it, but nothing seemed to happen.
I also tried mir_proving_server, but it exhibited the same flickering
behaviour.
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Can you also try mir_proving_server?
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Title:
Heavy black flickering in mir_demo_server
Status in Mir:
Incomplete
Statu
Thank you for taking the time to report this bug and helping to make Ubuntu
better. Please execute the following command, as it will automatically gather
debugging information, in a terminal:
apport-collect 1409133
When reporting bugs in the future please use apport by using 'ubuntu-bug' and
Public bug reported:
After running mir_demo_server on VT 1, when I switch to VT 7 then back
to VT 1, the demo server really flickers black quite a lot (entire
screen, pointer included). I'm not sure, but I also upgraded my kernel
to 3.18.2-031802-generic at the same time, if it's because of that,
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