[Bug 94534] New: Kernel 4.5.0 crashes when docking Lenovo T450s (with external monitor connected)
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon Mar 14 16:18:58 UTC 2016
https://bugs.freedesktop.org/show_bug.cgi?id=94534
Bug ID: 94534
Summary: Kernel 4.5.0 crashes when docking Lenovo T450s (with
external monitor connected)
Product: DRI
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: cs_gon at yahoo.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
I have also reported this bug on bugzilla.kernel.org (
https://bugzilla.kernel.org/show_bug.cgi?id=114601 ), not sure where the best
place to report this is.
When docking the T450s into the docking station (Lenovo Pro Dock) with an
external monitor connected, the kernel frequently crashes.
I have enabled kernel crash dumps and drm.debug=0x1e, and at least got the
dmesg output. But I currently don't have the debugging symbols (the kernel is
from the Ubuntu mainline PPA), so cannot provide a full backtrace at the
moment.
Please let me know if this is needed. And is compiling with CONFIG_DEBUG_INFO=y
enough, or are additional steps needed?
I also tested the drm-intel-nightly kernel
(linux-image-4.5.0-994-generic_4.5.0-994.201603132257_amd64.deb from the Ubuntu
kernel PPA), which causes the same crash (apart from the addresses the exact
same stack trace).
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