public inbox for linux-acpi@vger.kernel.org
 help / color / mirror / Atom feed
From: Silvio Caggia <silvio.caggia@tiscali.it>
To: linux-acpi@vger.kernel.org
Subject: I have some problems with acpi on my laptops:
Date: Thu, 29 Sep 2011 22:13:59 +0000 (UTC)	[thread overview]
Message-ID: <loom.20110930T000656-380@post.gmane.org> (raw)

I have some problems with acpi on my laptops:

first laptop is a Compaq Evo N800v:
- Lucid Puppy 5.2.8 installed in frugal mode
- Xorg_High-1.1-Lucid.pet installed
- acpitool-0.5.1-i486.pet installed
if I run acpitool -s it suspends correctly, but when I press power on all 
the laptop awakes except video display.
So the screen is black, if I press caps-lock the led works, if I press 
ctrl-alt-F1 and then ctrl-C I am still able to (blindly) type reboot...
It seems that the video adapter is not able to awake.
note: on the second laptop, a Compaq 6720s, if works perfectly.
Any suggestion?

I have also some problems of heating that causes video flickering when 
temperature raises.
When the pc is cold all works fine, as in a few minutes temperature raises 
the display starts flickering.
At the beginnign pressing and releasing the lid button is a momentary 
workaround to turn the display on. as temperature raise more the computer 
is pratically unusable.
using acpi-cpufreq with ondemand governor give me more time before the 
problem arise (cpu works most of time at 1.20Ghz instead of 1.80Ghz)
using Xvesa instead of radeon video drivers is a good workaround in spite 
of performance (glxgears runs 500 instead of 5000)
using software that do lot of things on screen or use lot of cpu the 
problem arise earlier.
applying a strong pressure with fingers on some points of the laptop is a 
desperate workaround for a few seconds... amazing but true!
note: external monitor seems not suffer of this problem.
I am trying to keep the laptop cool raising fan speed but I was not able 
to modify trip_points (they seems read only on lucid puppy), I tried also 
the commands:
echo -n 0 > /proc/acpi/fan/C1DC/state
echo -n 0 > /proc/acpi/fan/C1DB/state
echo -n 0 > /proc/acpi/fan/C1DA/state
echo -n 0 > /proc/acpi/fan/C1D9/state
that activate the fan at max speed but after 4 seconds they turn back to 
low speed.
Any suggestion?

second laptop is a Compaq 6720s:
- Lucid Puppy 5.2.8 booted from usbkey (windows7 on HD)
- acpitool-0.5.1-i486.pet
Problems with Lucid CPU Frequency Scaling Tool 0.7 (present in distro):
no one of the drivers listed is accepted except of p4-clockmod, this 
driver is warned not to work correcty in the banner of the Frequency 
Scaling Tool, and really I was not able to activate ondemand governor.
it only works with performance governor with a fixed 1,8Ghz speed heating 
very much the laptop and putting fan at high-speed all the time, or with 

powersave governor with a fixed 222Mhz speed, so slow that the system is 
not usable.
the cpu is a Celeron
note: on the first laptop, a Compaq Evo N800v, driver acpi-cpufreq works 
fine with ondemand governor, driver p4-clockmod have same problems.
How to activate a working driver with ondemand governor?


             reply	other threads:[~2011-09-29 22:20 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-29 22:13 Silvio Caggia [this message]
2011-09-30  1:58 ` I have some problems with acpi on my laptops: Matthew Garrett

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=loom.20110930T000656-380@post.gmane.org \
    --to=silvio.caggia@tiscali.it \
    --cc=linux-acpi@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox