Re: sleepy linux 2.6.23-rc9
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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: sleepy linux 2.6.23-rc9
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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: sleepy linux 2.6.23-rc9
Pavel Machek schrieb: 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. 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. ;-) Regards, -- Clemens Koller ___ R Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany http://www.anagramm-technology.com Phone: +49-89-741518-50 Fax: +49-89-741518-19 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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 config.gz Description: Binary data
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 config.gz Description: Binary data
Re: sleepy linux 2.6.23-rc9
Pavel Machek schrieb: 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. 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. ;-) Regards, -- Clemens Koller ___ RD Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany http://www.anagramm-technology.com Phone: +49-89-741518-50 Fax: +49-89-741518-19 - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: sleepy linux 2.6.23-rc9
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 - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: sleepy linux 2.6.23-rc9
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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
