ubuntu-x-swat team mailing list archive

[Henrique Sant'Anna <559482@xxxxxxxxxxxxxxxxxx>]

Still present in Maverick RC.

Only the external VGA flickers, can be LCD monitor or a projector.

So I can't do my  teaching presentations using Linux, have to boot
windows7. That is a shame to me, because I frequently advocates about
free software to the students, so they ask me "why do you tell us about
linux and use windows?". I have to say that hp doesn't support me to
resolve this issue, but they fills like Linux isn't good enough to get a
projector working. =/

I have a HP DV4 2080BR, with switchable ATI/Intel graphics. Firstly I
suspected that as Linux doesn't support the switchable thing, with the
both GPUs enabled, the external VGA flickers.

Yesterday I got to disable the ATI GPU with:
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

That way only Intel integrated GPU is enabled, while ATI is powered off.

So I connected a external VGA monitor and to my deception the flickering
(or "shivering") doesn't disappeared.

Will not be today that I will show my beautiful Kubuntu Desktop on my
class.

-- 
flickering on external screen
https://bugs.launchpad.net/bugs/559482
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