Public bug reported:
Since I upgraded to Noble the lxd vga console doesn't work anymore. I am
using the lxd latest/stable snap (5.20-f3dd836). When trying to attach a
vga console to an lxd vm I get:
unshare: write failed /proc/self/uid_map: Operation not permitted
It seems to be related to apparmor, I can see a matching DENIAL message
in dmesg:
[ 4735.233989] audit: type=1400 audit(1710419600.517:300):
apparmor="DENIED" operation="capable" class="cap"
profile="unprivileged_userns" pid=13157 comm="unshare" capability=21
capname="sys_admin"
** Affects: apparmor (Ubuntu)
Importance: Undecided
Status: New
** Affects: lxd (Ubuntu)
Importance: Undecided
Status: New
** Also affects: apparmor (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2057927
Title:
lxd vga console throws "Operation not permitted" error
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