[Bug 29842] Radeon runs very hot

[bugzilla-daemon at bugzilla.kernel.org]

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.


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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