** Description changed:
The system: locks up, disables the screen permanently (allowing reboot
by ssh), restarts X with no user action or causes random applications
(most likely: Firefox) to crash. Sometimes visual artifacts can be seen
such as colorful bands. Also, a kernel panic
Public bug reported:
The system: locks up, disables the screen permanently (allowing reboot
by ssh), restarts X with no user action or causes random applications
(most likely: Firefox) to crash. Sometimes visual artifacts can be seen
such as colorful bands. Also, a kernel panic sometimes occurs,
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https://bugs.launchpad.net/bugs/997373
Title:
The system becomes unstable when something changes on the screen
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It seems to be *not related* to xorg, but to Gnome sound system.
After disabling Terminal Bell in Gnome Terminal, the terminal works as
expected. There is an ALSA sink on my computer, which is not always
ready (bluetooth) and perhaps, Gnome waits for it instead of launching
the sound
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