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Fixing Ubuntu Gutsy's X.org configuration for a Toshiba Satellite R-15The i810 driver causes the X.org to consume 99% of the processor.
Author: M Butcher The ubgrade to Gutsy came with one nasty surprise: After a few hours of operation, the laptop would freeze. The screen would go black and the keyboard and mouse would become unresponsive. Not even CTL-ALT-Backspace (Restart X) or CTRL-ALT-DEL (Reboot) would work. To make things worse, the fan was on full blast. I hate to run laptop fans too long -- they have a bad habit of failing and frying the mobo. (I've had that happen with one Toshiba Satellite already. Rest assured that the R-15 is the last Satellite I will ever buy -- perhaps the last Toshiba, too.) However, I noticed that the network services were still running. So I installed openssh-server and waited for the next lockup. When that happened, I could then SSH into the system from another computer and start some investigating. What I discovered was that X.org was consuming 99.9% of the CPU. A glance at the output of 'top' was all I needed to know. Whiping out 'kill -9' was enough. X restarted and things went back to normal. "But do I really want to SSH into my laptop every time this happens?" No. After trolling the Ubuntu bug database, I happened upon number 138256. In the comments, various people described similar symtoms with systems using the Intel i810 graphics chipset. Checking /etc/X11/Xorg.conf, I saw that it was configured to use i810 for the driver. I switched it to 'intel', and it seems to be okay now. CAVEAT: Users of other systems (notably, Toshiba Tecras) are complaining that they have had to drop from 'intel' to 'i810'. |
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