ACPI and framebuffer related problems with Linux 2.6.1-rc1
Hi folks,
I'm writing this mail as I'm discovering ACPI and framebuffer related problems on my Acer TravelMate 800LCi notebook with Linux 2.6.1-rc1. First, it's good to see that the synaptics-patches from -mm made it into the mainstream kernel, they are necessary to make the synaptics work together with XFree here.
However, there is a problem with ACPI: /proc/acpi/processor/CPU0/performance, which was there in previous versions of the kernel and allowed me to slow the CPU down in order to save power, disappeared in Linux 2.6.1-rc1. It's simply not there anymore. Was it replaced? If so, what is the right way to do it by now?
Secondly, there also is a framebuffer related problem. I have VesaFB in kern and pass 'vga=791' to it at boot time. However, at the time when it switched to FB in previous versions of Linux, the screen by now simply stays black. Is this a known problem and if so is a fix available?
Signature · 4 lines
.''`. Martin Loschwitz Debian GNU/Linux developer : :' : [email protected] [email protected] `. `'` http://www.madkiss.org/ people.debian.org/~madkiss/ `- Use Debian GNU/Linux 3.0! See http://www.debian.org/
A message that is not in the archive (sent off-list or not yet received): 20040101220615.GA1804-pLH66uKTs7QSl9drg5isYP8+0UxHXcjY@public.gmane.org
Quoted 6 lines · On Thu, 1 Jan 2004 23:06:15 +0100 Martin Loschwitz…
However, there is a problem with ACPI:
/proc/acpi/processor/CPU0/performance, which was there in previous versions of the kernel and allowed me to slow the CPU down in order to save power, disappeared in Linux 2.6.1-rc1. It's simply not there anymore. Was it replaced? If so, what is the right way to do it by now?
After reading this E-Mail I tested it on my notebook (TarvelMate800) and noticed that even with kernel 2.6.0
/proc/acpi/processor/CPU0/limit and
/proc/acpi/processor/CPU0/performance
disappeared.
Kernel 2.4.23:
($:/)-> cat /proc/acpi/processor/CPU0/info
processor id: 0 acpi id: 0 bus mastering control: yes power management: yes throttling control: no performance management: yes limit interface: yes
Kernel 2.6.0:
($:/)-> cat /proc/acpi/processor/CPU0/info
processor id: 0 acpi id: 0 bus mastering control: yes power management: yes throttling control: no performance management: no limit interface: no
I don't use the performance option, since I throttle my notebook with cpufreq, but it still looks like a regression.
/Michael
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Quoted 5 lines
Secondly, there also is a framebuffer related problem. I have VesaFB in kern and pass 'vga=791' to it at boot time. However, at the time when it switched to FB in previous versions of Linux, the screen by now simply stays black. Is this a known problem and if so is a fix available?
First try my new patch.
http://phoenix.infradead.org/~jsimmons/fbdev.diff.gz
If that doesn't work send me your config file.
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Quoted 5 lines
Secondly, there also is a framebuffer related problem. I have VesaFB in kern and pass 'vga=791' to it at boot time. However, at the time when it switched to FB in previous versions of Linux, the screen by now simply stays black. Is this a known problem and if so is a fix available?
First try my new patch.
http://phoenix.infradead.org/~jsimmons/fbdev.diff.gz
If that doesn't work send me your config file.
-------------------------------------------------------
This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id=1278&alloc_id=3371&op=click