The workaround on https://code.launchpad.net/~hui.wang/unity-settings-
daemon/unity-settings-daemon-master-touchscreen-fix/+merge/293704 seems
to be to workaround the segfault there
in that the description is
"on a Lenovo laptop with the LG LCD panel and the LG touchscreen, when
we change the display resolution, the LG touchscreen will be temporarily
disconnected from USB host bus for about 0.2 seconds, then will be
reconnected to the USB host bus. If we let the system call
do_touchscreen_mapping() before the reconnectting, the u-s-d will
crash."
so it seems likely that u-s-d gets confused by the screen being removed
while configured, maybe some callback not being disconnected when they
should...
** Changed in: unity-settings-daemon (Ubuntu)
Importance: Undecided => High
** Changed in: unity-settings-daemon (Ubuntu)
Status: New => Triaged
** Bug watch added: Red Hat Bugzilla #1318294
https://bugzilla.redhat.com/show_bug.cgi?id=1318294
** Also affects: unity-settings-daemon (Fedora) via
https://bugzilla.redhat.com/show_bug.cgi?id=1318294
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/1503758
Title:
/usr/lib/unity-settings-daemon/unity-settings-
daemon:5:XIQueryDevice:xdevice_get_dimensions:input_info_find_size_match:get_mappable_output_info:do_touchscreen_mapping
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