Public bug reported:
When the Xmir server is run on a device or desktop under Unity 8 it
fails to start with the following error messages.
[xkb] Can't rename /run/user/32011/confined/com.ubuntu.sdk/fileSgDXpU to
/tmp/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm, error: Invalid
cross-device link
XKB: Failed to compile keymap
Keyboard initialization failed. This could be a missing or incorrect setup of
xkeyboard-config.
(EE) Fatal server error:
(EE) Failed to activate core devices.(EE)
We traced the problem down to the fact that the $TMPDIR is set in the
environment and points to a confined location in the /run filesystem,
and x.org uses the hardcoded path of /tmp which is a different
filesystem. A Ubuntu-specific patch to the x.org server attempts to
rename the .xkm file across filesystems (which is not allowed).
To avoid this error the Ubuntu-speicific patch to cache the xkb file
should also patch the hardcoded /tmp to use $TMPDUR if it is set.
** Affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1564920
Title:
x.org server fails to start when $TMPDIR is set
Status in xorg-server package in Ubuntu:
New
Bug description:
When the Xmir server is run on a device or desktop under Unity 8 it
fails to start with the following error messages.
[xkb] Can't rename /run/user/32011/confined/com.ubuntu.sdk/fileSgDXpU to
/tmp/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm, error: Invalid
cross-device link
XKB: Failed to compile keymap
Keyboard initialization failed. This could be a missing or incorrect setup
of xkeyboard-config.
(EE) Fatal server error:
(EE) Failed to activate core devices.(EE)
We traced the problem down to the fact that the $TMPDIR is set in the
environment and points to a confined location in the /run filesystem,
and x.org uses the hardcoded path of /tmp which is a different
filesystem. A Ubuntu-specific patch to the x.org server attempts to
rename the .xkm file across filesystems (which is not allowed).
To avoid this error the Ubuntu-speicific patch to cache the xkb file
should also patch the hardcoded /tmp to use $TMPDUR if it is set.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1564920/+subscriptions
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