This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1863939
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 comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1863939
Title:
Linux 5.4.0-14 from focal repo does not boot on Lenovo Yoga C630 WOS,
while Linux 5.4.0 from mainline PPA does boot
Status in linux package in Ubuntu:
Confirmed
Bug description:
Hello!
I found that both of generic and snapdragon kernels from focal
repository (5.4.0-14-generic and 5.4.0-14-snapdragon was tested) does
not boot on Lenovo Yoga C630 WOS. Boot process hang at "Loading device
tree blob..." (which means I can not provide apport report, because I
can not boot kernel from focal repository, and apport refuse to
collect information with other kernels).
At the same time snapdragon kernel from https://kernel.ubuntu.com
/~kernel-ppa/mainline/v5.4.20/ boot mostly fine (albeit with
https://bugzilla.kernel.org/show_bug.cgi?id=204685 and
https://bugs.launchpad.net/bugs/1863761 ).
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