This bug was fixed in the package linux - 4.15.0-23.25
---
linux (4.15.0-23.25) bionic; urgency=medium
* linux: 4.15.0-23.25 -proposed tracker (LP: #1772927)
* arm64 SDEI support needs trampoline code for KPTI (LP: #1768630)
- arm64: mmu: add the entry trampolines start/end s
This bug was fixed in the package linux - 4.15.0-23.25
---
linux (4.15.0-23.25) bionic; urgency=medium
* linux: 4.15.0-23.25 -proposed tracker (LP: #1772927)
* arm64 SDEI support needs trampoline code for KPTI (LP: #1768630)
- arm64: mmu: add the entry trampolines start/end s
4.15.0-23-generic from -proposed is working fine.
** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic
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https://bugs.launchpad.net/bugs/1763189
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verifica
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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Title:
kernel 4.15 breaks nouveau on Lenovo P50
S
** Changed in: linux
Status: Confirmed => Fix Released
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Title:
kernel 4.15 breaks nouveau on Lenovo P50
Status in Linux:
F
SRU request submitted:
https://lists.ubuntu.com/archives/kernel-team/2018-May/092318.html
** Description changed:
- After updating to linux 4.15.0-13-generic, the system freezes at boot,
- apparently when the nouveau driver tries to start. The console is still
- in 80x25 text mode at this point.
** Changed in: linux
Status: Unknown => Confirmed
** Changed in: linux
Importance: Unknown => High
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Title:
kernel 4.15 br
Thanks for testing! I"ll submit an SRU request for that patch.
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Title:
kernel 4.15 breaks nouveau on Lenovo P50
Status in Linux:
The test kernel works fine, thanks!
Ben Skeggs is an upstream nouveau maintainer, so I assume that anything
in https://github.com/skeggsb/nouveau will end up in mainline
eventually. So I would suggest taking the patch from comment #2. I'll
ping him on GitHub about submitting it to mainline soone
It doesn't look like the patch from comment 2 landed in mainline or
linux-next as of yet. Do you plan on submitting your patch upstream?
We could integrate either patch into the Ubuntu kernel, but we prefer to
use the one that is in the upstream kernel.
I built a test kernel with the patch from
I didn't test the patch in comment #2 directly. It's very similar to
the one I posted in comment #1 (which I've tested), so I'm pretty
confident it would work. I'd be happy to try out a test kernel though.
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Were you able to test the fix posted in comment 2 of the upstream bug
report? If you need, I can build you a test kernel with it.
** Changed in: linux (Ubuntu)
Importance: Medium => High
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (
https://bugs.freedesktop.org/show_bug.cgi?id=106456
** Bug watch added: freedesktop.org Bugzilla #106456
https://bugs.freedesktop.org/show_bug.cgi?id=106456
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Bisected:
af2405af07d168e2905f2ac9494d3a804a549f0f is the first bad commit
commit af2405af07d168e2905f2ac9494d3a804a549f0f
Author: Thierry Reding
Date: Tue Jul 4 17:18:21 2017 +0200
drm/fb-helper: Push down modeset lock into FB helpers
Move the modeset locking from drivers into FB
This has something to do with using DisplayPort monitors (through the
two DisplayPort connectors on the laptop dock). When the laptop is
undocked and a single external monitor connected to the HDMI port on the
laptop itself, nouveau works fine. Dock the laptop and suddenly it
can't boot any more.
Also affects Ubuntu Mate 18.04 Beta 2 with nouveau (using Linux 4.15).
Even the installer is unbootable unless "nomodeset xforcevesa" is added
to the kernel command line.
The proprietary NVidia driver seems to work okay.
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P
I tested the following mainline packages:
linux-headers-4.16.0-041600_4.16.0-041600.201804012230_all.deb
linux-headers-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb
linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb
Still unbootable except in recovery mode.
The o
apport information
** Tags added: apport-collected xenial
** Description changed:
After updating to linux 4.15.0-13-generic, the system freezes at boot,
apparently when the nouveau driver tries to start. The console is still
in 80x25 text mode at this point. No panic or error message is
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.16 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
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