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HP6720s and Xorg's intel driver
2009-10-05, 22:47:39
Recently I have noticed very ugly video glitches in both Ubuntu and Gentoo while switching between tty and X. I've found a solution on Gentoo Wiki page.
If you are using Gentoo, you need to emerge and build linux kernel 2.6.31 (or newer); in case of Ubuntu you need to upgrade your kernel via apt.
The trick is to calculate how much VideoRAM should be passed in xorg.conf file.
should display an info about installed hardware. Please find a section with the VGA controller, it should look like the similar:
...
Region 0: Memory at e4400000 (64-bit, non-prefetchable) [Size=1M]
Region 2: Memory at d0000000 (64-bit, prefetchable) [Size=256M]
Subtract prefetchable size from non-prefetchable, convert MBs to KBs and put the result as VideoRAM value in the xorg.conf file:
...
VideoRAM 261120
...
EndSection
Also, add another option to „Device'' section:
Restart X and/or whole system (if you did not boot with new kernel before)
(tags: linux gentoo ubuntu x11 intel hp6720s )
Simon Gomizelj
2009-11-02, 09:23:44; #875
Consider settings up kernel mode setting. It solves the glitches, considerably speeds up the tty/X switch, and gives you a terminal in you're monitors native resolution.