linux-kernel - sleepy linux 2.6.23-rc9

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20071008220506.GE3484@elf.ucw.cz>
Date:	Tue, 9 Oct 2007 00:05:06 +0200
From:	Pavel Machek <pavel@....cz>
To:	tglx@...utronix.de, kernel list <linux-kernel@...r.kernel.org>
Subject: sleepy linux 2.6.23-rc9

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? 

(config attached, I did all the stuff powertop told me to, and then some.)
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Download attachment "config.gz" of type "application/octet-stream" (12028 bytes)