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On 2012-01-09 11:51, Blakawk wrote: |
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> Hi folks ! |
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> |
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> I am facing a problem since a week now when enabling radeon power |
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> management following KMS Power Management Options [1]. I have two |
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> radeon HD 9770 on my system in crossfire configuration, but on Linux |
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> I |
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> only use one of them (the first one on the PCI bus). |
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|
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I mistyped the GPU's model name: it is an HD 6770 "Evergreen" using |
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JUNIPER firmware. |
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|
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> When I switch the GPUs using the low profile, randomly, my system |
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> hangs. The problem is that I have nothing ! No kernel panic, no logs, |
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> really nothing. I tried everything, adding hard and soft lockup |
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> detection in the kernel did not help, I also enabled nmi_watchdog |
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> without success, tried kexec and kernel crash dumps either. I am |
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> getting to the point of booting the kernel using kgdb/kdb over a |
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> serial connection... |
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> |
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> As radeon guys on the IRC #radeon channel seems to be muted on this |
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> point, I would like to know if anyone here can lead me through a way |
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> to help debugging this problem, as the consequence of staying in |
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> default power profile make my GPU "burning" around 70°C... |
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> |
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> I can provide as many information as possible, and here is a little |
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> summary about my configuration: |
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> - Gentoo sources 3.2.0-r1, |
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> - in-kernel radeon module with KMS enabled, |
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> - ~amd64 keyword. |
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> |
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> Many thanks for your help. |
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> |
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> [1] http://wiki.x.org/wiki/RadeonFeature#KMS_Power_Management_Options |
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