*** This bug is a duplicate of bug 1919342 ***
https://bugs.launchpad.net/bugs/1919342
Please advise which logs are appropriate. I can boot into one of the
"bad" kernels and collect standard logs etc. while it is running but
*before* I try touching the screen with the stylus. This would give
standard info but not necessarily pinpoint the issue.
What I would really like to know is this: if I replicate the problem
(i.e. freeze the OS), will this write appropriate diagnostic info to
some log file which is then still available after a hard reboot?
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https://bugs.launchpad.net/bugs/1921066
Title:
thinkpad yoga X1 3rd gen stylus freezes OS 20.04 LTS certain kernels
Status in linux package in Ubuntu:
New
Bug description:
I am running 20.04.1 LTS on a Thinkpad X1 Yoga 3rd Gen. After recent routine
kernel updates, touching the screen with the stylus freezes the whole operating
system. It is not associated with a single application or package (I guess it
is the kernel package, see below). I am running the default ubuntu desktop
environment.
I recently switched from fedora 33 on this same machine, and this
problem occurred with it too. I "solved" it by simply loading an
earlier kernel, and trying each updated kernel version until the
problem did not occur.
The problem occurs with the following ubuntu kernels:
5.8.0-45-generic
5.8.0-48-generic
It does *not* occur with
5.8.0-44-generic
Please advise what other debugging info I can supply. I am sorry I did
not take note of the kernel versions that did or did not experience
the problem in fedora, although I note that fedora 33 also seems to be
using the same 5.8 series.
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