Qubes 3.2 rc3 GUI randomly "freezes" (about once a week), making the
effectively hardly usable for any real work (too unreliable), on a
T500 / Core2 Duo.
Actually such freeze affects the desktop and windows display only:
- Applications still continue to run in the background,
- The mouse cursor can still be moved, it even changes appropriately
blindly reaching what correspond to a window border,
- I can switch back-and-forth to a text console (this one didn't work
I had the very same issue with Qubes previous release, but I managed to
it by setting KWin to use XRender instead of OpenGL as compositing
Details on the workaround are available here:
This laptop has two graphical chipsets, only the selected one (BIOS
being detectable by the OS at any given time. The original issue
affected both the ATI Mobility Radeon HD 3650 and the Intel i915, so it
clearly no driver dependent.
Currently I can only test it with the ATI Radeon card since, due to
unrelated issue Qubes does not seem to support the i915 graphical
anymore (both at install and boot time, no problem in running Fedora
this is clearly a Qubes / Xen specific issue).
This old post let me think that other people may encounter a similar
running Qubes on a T500:
I am not up to the highest graphical performances (as for now Qubes
be the wisest choice for this IMHO), but I would like a reliable system
is not prone to loose all unsaved work at any time.
For now, I tried to disable compositing and automatically hide the dock
compensate the lack of transparency. This is not very practical but
all those bright red and yellow icons are too much distracting. While I
back on a pre-2000 era system, at least I hope it may make Qubes a
reliable (crossing my fingers...).
I was happy for months with the XRender workaround in KDE, so if anybody
any equivalent in the XFCE world or any other way to fix this he will
my gratitude :) !
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