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Bug 184475 - ati-drivers powersave does not kick in at boot time
Summary: ati-drivers powersave does not kick in at boot time
Status: RESOLVED UPSTREAM
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Unspecified (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo Linux bug wranglers
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-07-07 07:48 UTC by Arvind Jayaprakash
Modified: 2007-07-07 10:02 UTC (History)
0 users

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Package list:
Runtime testing required: ---


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Description Arvind Jayaprakash 2007-07-07 07:48:09 UTC
ati-drivers puts the video cards in the lowest powerstate when either AC power is disconncted or (optionally) the laptop lid is closed. If the laptop is booted from battery, then the video card runs in the highest power consuming state

Reproducible: Always

Steps to Reproduce:
1. Boot laptop from battery


Actual Results:  
$ aticonfig --list-powerstates
    core/mem      [flags]
-----------------
  1: 209/135 MHz  [low voltage]
  2: 392/252 MHz
* 3: 432/396 MHz  [default state]

Expected Results:  
$ aticonfig --list-powerstates
    core/mem      [flags]
-----------------
* 1: 209/135 MHz  [low voltage]
  2: 392/252 MHz
  3: 432/396 MHz  [default state]


The ati power management is linked to acpi events. I guess when a laptop boots directly from battery, there is no event generated that says "no more AC power" and hence the system goes into default state which happens to be maximum power consumption
Comment 1 Jakub Moc (RETIRED) gentoo-dev 2007-07-07 07:53:32 UTC
We cannot fix binary blobs, sorry. You'll need to complain to ATI.
Comment 2 Arvind Jayaprakash 2007-07-07 09:52:47 UTC
(In reply to comment #1)
The power state can be set by calling "aticonfig --set-powerstate=1". I was wonodering if we could add that to one of the startup scrips.
Comment 3 Jakub Moc (RETIRED) gentoo-dev 2007-07-07 10:02:15 UTC
(In reply to comment #2)
> (In reply to comment #1)
> The power state can be set by calling "aticonfig --set-powerstate=1". I was
> wonodering if we could add that to one of the startup scrips.

Sure, feel free to add it for yourself to /etc/conf.d/local.start :)