Messages in this thread | | | Subject | Re: sleepy linux 2.6.23-rc9 | From | "Antonino A. Daplas" <> | Date | Tue, 09 Oct 2007 12:33:33 +0800 |
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On Tue, 2007-10-09 at 00:05 +0200, Pavel Machek wrote: > Hi! > > I played with powertop a bit, and found a fairly interesting failure > mode. If I boot init=/bin/bash vga=1, I get ~2 wakeups a second, nice. > > When I boot init=/bin/bash vga=791 (vesa framebuffer), most wakeups > are caused by cursor painting (I should fix that some day, I > guess). But... the cursor blinking does not even work properly! > > It blinks at normal speed, then (randomly) it blinks slowly, then gets > back to normal speed, then inserts longer delay. > > The effect is so nice that I thought about youtube ;-). Thinkpad > x60.. question is, how to debug it?
The cursor blinking is done by software via a timer. It's in drivers/video/console/fbcon.c.
With the latest -rc kernel you can turn off the blinking with
echo 0 > /sys/class/graphics/fbcon/cursor_blink
Tony
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