[Bug 29842] Radeon runs very hot

[Pasi Kärkkäinen]

On Wed, Feb 22, 2012 at 04:56:26PM +0000, bugzilla-daemon at bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=29842
> 
> 
> 
> 
> 
> --- Comment #14 from Igor Rudchenko <igor at starrain.org>  2012-02-22 16:56:23 ---
> Commit "PCI: Rework ASPM disable code" added in 3.0.20 and 3.2.25 has worsened
> the situation. I can't enable ASPM on ThinkPad T60 now even with
> "pcie_aspm=force" kernel parameter. So radeon is always hot now.
> 

Are you sure it's about ASPM ? My radeon (On a HP laptop) is very hot because
of the unimplemented (and/or buggy) power management in the radeon driver!

I can make the temperature lower if I switch to power_profile "low" instead of the "default".

-- Pasi

> 
> 3.2.4 kernel:
> 
> # dmesg | grep ASPM
> [    0.000000] PCIe ASPM is forcibly enabled
> [    0.161612] ACPI FADT declares the system doesn't support PCIe ASPM, so
> disable it
> [    3.612673] e1000e 0000:02:00.0: Disabling ASPM L0s L1
> 
> # lspci -vv -s 01:00.0 | grep ASPM
> LnkCap:    Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <64ns, L1
> <1us
> LnkCtl:    ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
> 
> # cat /proc/acpi/ibm/thermal
> temperatures:    49 41 37 68 36 -128 33 -128 42 54 55 -128 -128 -128 -128 -128
> 
> 
> 3.2.5 kernel:
> 
> # dmesg | grep ASPM
> [    0.000000] PCIe ASPM is forcibly enabled
> [    0.161614] ACPI FADT declares the system doesn't support PCIe ASPM, so
> disable it
> [    3.523647] e1000e 0000:02:00.0: Disabling ASPM L0s L1
> 
> # lspci -vv -s 01:00.0 | grep ASPM
> LnkCap:    Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <64ns, L1
> <1us
> LnkCtl:    ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
> 
> # cat /proc/acpi/ibm/thermal
> temperatures:    51 41 37 72 36 -128 33 -128 43 55 59 -128 -128 -128 -128 -128
> 
> 
> Already tested kernels 3.2.7 and 3.3-rc4 - same problem.
> 
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