[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1695989
Ok, I reported a new bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662
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https://bugs.launchpad.net/bugs/1695989
Title:
i915 *ERROR* CPU pipe A FIFO underrun - graphic
Alexander Kops, the issue for the original reporter was identified as
fixed in as early as 4.12-rc4.
However, given you have different hardware, and may be experiencing either a
regression of said fix, or similar problem with different root cause, it is
most helpful if you filed a new report
** Tags removed: kernel-bug-exists-upstream-4.11.0rc1 kernel-bug-exists-
upstream-4.11.1 kernel-fixed-upstream-4.12.0rc1 kernel-fixed-
upstream-4.12.3 kernel-fixed-upstream-4.13.2
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I upgraded to Ubuntu 17.10 and this bug started appearing (didn't have this
with the versions before).
When I lock my screen on my Lenovo T450s and the notebook sits in the dock, one
of the three things happen when I come back after some time and try to unlock:
* Most of the time the computer
4.13.2 kernel working fine for 2 days with Ubuntu Gnome 17.04, I have an
old IronLake i5 intel.
** Tags added: kernel-fixed-upstream-4.12.3 kernel-fixed-upstream-4.13.2
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Nearly 3 months running kernel 4.12.3 with no issues.
Kernel 4.13 will be in Ubuntu 17.10, so I hope that will work fine. Has
anyone tested the beta to confirm its ok?
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@penalvch
kernel 4.12rc4 has been working very smoothly over the past couple of
months, no crashes and no FIFO errors in dmesg.
One issue is that I cant run SNAP packages (i think its apparmour not
being in mainline, so they cant run in a protected sandbox).
I'm happy spending some time
I got this bug with kubuntu 16.04.02 hwe-update.
I've updated from 16.04.1 which worked fine, therefore I downgrade to
16.04.1
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Title:
i915
Hi Chris (penalvch)
Kernel 4.12rc1 and rc4 are both fine in terms of the bug and seem to run
very smoothly, but the 4.11rc1, 4.11.1, 4.11.3 all show the bug (and I
have seen them crash HARD, not just screen glitches).
I havent yet gone back through 4.10 yet to find the first 'bad' kernel. Can
** Tags added: kernel-bug-exists-upstream-4.11.0rc1 kernel-bug-exists-
upstream-4.11.1 kernel-bug-exists-upstream-4.11.3 kernel-fixed-
upstream-4.12.0rc1
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chris, the next step is to fully reverse commit bisect from kernel 4.10
to 4.12-rc4 in order to identify the last bad commit, followed
immediately by the first good one. Once this good commit has been
identified, it may be reviewed for backporting. Could you please do this
following
** Tags added: kernel-fixed-upstream kernel-fixed-upstream-4.12-rc4
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Title:
i915 *ERROR* CPU pipe A FIFO underrun - graphic glitches
To manage
@penalvch
OK. Good news - 4.12-0rc4 seems very stable (visually at least)
I have opened 3 terminal windows, have them running 'top' and other
commands so the window contents get updated, dragged them so they hang
half off the bottom of the screen... 10 mins so far and no crashes, no
black
Sorry - I then also got the
linux-headers-4.12.0-041200rc4_4.12.0-041200rc4.201706042031_all.deb
and tried again, that seemed to work. (MainlineBuilds website could be a bit
more clear on what is required...)
will reboot and test now.
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Hi Chris, sorry that didnt seem to work. see attached file.
** Attachment added: "kernel_install_errors.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1695989/+attachment/4889591/+files/kernel_install_errors.txt
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Hi Chris,
ok - I followed your link and installed:
linux-headers-4.12.0-041200rc4-generic_4.12.0-041200rc4.201706042031_amd64.deb
linux-image-4.12.0-041200rc4-generic_4.12.0-041200rc4.201706042031_amd64.deb
with sudo dpkg -i *.deb
will report back - fingers crossed!
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Chris, thank you for reporting this and helping make Ubuntu better.
In order to allow additional upstream developers to examine the issue, at your
earliest convenience, could you please test the latest upstream kernel
available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ?
** Tags added: bios-outdated-a15
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Title:
i915 *ERROR* CPU pipe A FIFO underrun - graphic glitches
To manage notifications about this bug go to:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
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Title:
i915 *ERROR* CPU pipe A FIFO underrun - graphic
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