lkml.org 
[lkml]   [2007]   [Oct]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: sleepy linux 2.6.23-rc9
    From
    Date
    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


    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2007-10-09 06:37    [W:0.035 / U:2.068 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site