Bug#404090: GPU temperature skyrockets after starting X

Alberto Gonzalez Iniesta agi at inittab.org
Thu Dec 21 08:37:14 PST 2006

Package: xserver-xorg-video-ati
Version: 1:6.6.3-2
Severity: important

Hi X Strike Force,

I'm fighting with my new (2nd hand) iBook G4 and found the following
behaviour in it:
(I don't run ?dm, the computer starts in text console mode)
- Start X, the GPU temperature starts to rise *very* quickly
- The temperature will reach 80 Celsius and fan will turn on
  (don't know how far it would go)
- No matter whether you remain in X or quit, the temperature won't

Now, if you suspend the laptop (by closing the lid) and resume
(just after a couple of secs.) not only the temperature will be
much lower, it will remain that low (~60C). That will happen
whether you suspend after quitting X OR even if you stay in X before
and after resuming.

So the problem seems to be in the initialization of the video card.

My video card conf:
Section "Device"
  Identifier      "Generic Video Card"
#  Driver          "radeon"
  Driver          "ati"
  BusID           "PCI:0:16:0"
  Option          "UseFBDev"
  VendorName      "ATI"
# Option          "AGPMode" "4"

I've tried both 'radeon' and 'ati' drivers and AGPMode 4 and none (1).
All with the same result. So it could be a kernel (module) problem



-- System Information:
Debian Release: 4.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: powerpc (ppc)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)

Versions of packages xserver-xorg-video-ati depends on:
ii  libc6                        2.3.6.ds1-9 GNU C Library: Shared libraries
ii  xserver-xorg-core            2:1.1.1-12  X.Org X server -- core server

xserver-xorg-video-ati recommends no packages.

-- no debconf information

Alberto Gonzalez Iniesta    | Formación, consultoría y soporte técnico
agi@(inittab.org|debian.org)| en GNU/Linux y software libre
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