[Bug 40762] Kernel crashes when activation powersaving feature of mobility radeon x1400

[Bug 40762] Kernel crashes when activation powersaving feature of mobility radeon x1400

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=40762


Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rjw@sisk.pl
          Component|Other                       |Video(DRI - non Intel)
         AssignedTo|power-management_other@kern |drivers_video-dri@kernel-bu
                   |el-bugs.osdl.org            |gs.osdl.org
            Product|Power Management            |Drivers




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[Bug 40762] Kernel crashes when activation powersaving feature of mobility radeon x1400

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=40762

--- Comment #1 from Keivan Moradi <k.moradi@gmail.com> ---
I still have this problem in linux kernel 3.4.55 in ubuntu 12.04.2

- When I activate dynpm kernel craches. 
- In the profile mode also I get the same error as I did before.

I have noticed that the kernel do not changes the GPU and Vram frequencies
correctly in the profile mode. 

This is what I get when I set it to mid:
# echo mid > /sys/class/drm/card0/device/power_profile
# cat /sys/kernel/debug/dri/0/radeon_pm_info

default engine clock: 432000 kHz
current engine clock: 209250 kHz
default memory clock: 396000 kHz
current memory clock: 135000 kHz
PCIE lanes: 1

This is what I get when I set it to low:
# echo low > /sys/class/drm/card0/device/power_profile
# cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 432000 kHz
current engine clock: 324000 kHz
default memory clock: 396000 kHz
current memory clock: 135000 kHz
PCIE lanes: 1

This is what I get when I set it to high:
# echo high > /sys/class/drm/card0/device/power_profile
# cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 432000 kHz
current engine clock: 432000 kHz
default memory clock: 396000 kHz
current memory clock: 396000 kHz
PCIE lanes: 0

If you look at the above values, it is obvious that the default clock of mid
and low should be replaced with each other.

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[Bug 40762] Kernel crashes when activation powersaving feature of mobility radeon x1400

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=40762

steve_northover@hotmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |steve_northover@hotmail.com

--- Comment #2 from steve_northover@hotmail.com ---
Editing a bug.  I'm very sorry for the noise.

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