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Message #67965
[Bug 541501] Re: [RV515] [LENOVO T60] external screen display shows "shivering", horizontal refresh offset
Same bug on a Lenovo R60 with ATI X1400.
With single head the screen starts flickering after a while like Gary B.
described above. I added modeset=0 and the flickering takes longer, but
it is still there. Seems to be related to the machines temperature. If
the cpu is busy for a while the flickering gets worse.
If I use dual head the shivering is always present like in the youtube
video. modeset didn't change anything.
Today I installed mainline kernel 2.6.34 and the dual head shivering was fixed. But the flickering with single head is still there.
http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.34-rc6-lucid/
Furthermore if I reboot the machine it hangs with some red garbage on
the top of the screen.
Let me know if there is more information needed.
Cheers,
Timo
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[RV515] [LENOVO T60] external screen display shows "shivering", horizontal refresh offset
https://bugs.launchpad.net/bugs/541501
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References