You have been subscribed to a public bug:
Ubuntu-Studio 20.04.3 LTS on MacPro 5,1, dual W3520
>From /proc/version: Linux version 5.11.0-27-lowlatency
>(buildd@lcy01-amd64-019) (gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, GNU ld
>(GNU Binutils for Ubuntu) 2.34) #29~20.04.1-Ubuntu SMP PREEMPT Wed Aug 11
>17:06:56 UTC 2021
# apt-cache policy shim-signed
shim-signed:
Installed: 1.40.7+15.4-0ubuntu9
Candidate: 1.40.7+15.4-0ubuntu9
Version table:
*** 1.40.7+15.4-0ubuntu9 500
500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64
Packages
100 /var/lib/dpkg/status
1.40.3+15+1533136590.3beb971-0ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages
>What you expected to happen
Running `apt upgrade` would complete without issue.
>What happened instead
System hard lock, becomes completely unresponsive both from the local
terminal and over established SSH. Eventually memory is exhausted and
the machine reboots.
Upon restart, running `apt upgrade` returns the error: "E: dpkg was
interrupted, you must manually run 'dpkg --configure -a' to correct the
problem."
Running `dpkg --configure -a` attempts to complete installation of shim-
signed, segfaults, requiring a cold boot.
Only a fraction of the errors generated get written to the logs before
the crash as the crash prevents a final flush to disk. From a remote
machine I tailed several logs and triggered the crash again, then copied
the results from the terminal and attached to report.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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package shim-signed 1.40.7+15.4-0ubuntu9 failed to install/upgrade: kernel
segfault. Hard lock
https://bugs.launchpad.net/bugs/1941963
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