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[Bug 266911] Re: blank screen when starting second session (tested with guest session)

 

Confirming the bug still applies.. Whenever user-change / guest-session
is activated the computer deadlocks, only hard boot will make the day.
I.e., all interrups are blocked - fn + key and power button has no
effect.

Also, i've experienced similar problems when switching out from serial VT to VT 7/8 but beleive this has been fixed.
Same type of deadlock also occurs on occation while resuming from hibernation. This occurs, I think, when monitors connected while entering hibernation mode has been disconnected when resuming again.

Attached is the `dmesg | egrep "(irq|fglrx|acpi|pci)"` and my hardware
is:

01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Mobility
Radeon HD 3400 Series [1002:95c4]

aticonfig --query-monitor
Error: option --query-monitor is not supported when RandR 1.2 is enabled!

aticonfig --list-adapters
* 0. 01:00.0 ATI Mobility Radeon HD 3400 Series

 aticonfig --query-connectortype=crt1
 connector type: VGA .

aticonfig --query-connectortype=lvds
 connector type: unknown .

** Attachment added: "dmesg log"
   http://launchpadlibrarian.net/38617180/dmesg.filtered

-- 
blank screen when starting second session (tested with guest session)
https://bugs.launchpad.net/bugs/266911
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