From: "H. Peter Anvin" <hpa@zytor.com>
To: Clemens Koller <clemens.koller@anagramm.de>
Cc: Pavel Machek <pavel@ucw.cz>,
tglx@linutronix.de, kernel list <linux-kernel@vger.kernel.org>
Subject: Re: sleepy linux 2.6.23-rc9
Date: Mon, 08 Oct 2007 17:52:18 -0700 [thread overview]
Message-ID: <470AD0C2.9060709@zytor.com> (raw)
In-Reply-To: <470AC166.20705@anagramm.de>
Clemens Koller wrote:
>>
>> 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.
>
> Is the effect a beat that it has roughly the frequency of your Notebooks
> screen refresh rate (60Hz)? (in german: Schwebung)
>
>> The effect is so nice that I thought about youtube ;-). Thinkpad
>> x60.. question is, how to debug it?
>
> No idea... check where the register of the HW cursor blink rate
> gets written? But as it seems to be so nice, please submit a patch
> which enables this for all platforms. ;-)
>
For the VESA framebuffer I would assume the cursor blinking is done in
software (if done at all.)
-hpa
next prev parent reply other threads:[~2007-10-09 0:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-08 22:05 sleepy linux 2.6.23-rc9 Pavel Machek
2007-10-08 23:46 ` Clemens Koller
2007-10-09 0:52 ` H. Peter Anvin [this message]
2007-10-09 4:33 ` Antonino A. Daplas
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