[Bug 29412] New: fans running at full-speed after resume from suspend with radeon and KMS

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=29412

           Summary: fans running at full-speed after resume from suspend
                    with radeon and KMS
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.38-rc5+
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri at kernel-bugs.osdl.org
        ReportedBy: jon+bugzilla.kernel.org at alcopop.org
        Regression: No


Hi,

Originally reported against the wrong product, here:
https://bugzilla.kernel.org/show_bug.cgi?id=18552

I have an ATI Radeon X850XT PCIE card plugged into an Intel DG35EC motherboard.

With kernels since 2.6.32-rc1 and most recently tested with mainline commit
2a324ce7b79a3a90cc2d4ade5d5f960a99000caa (2.6.38-rc5+),  if I attempt a
suspend-to-ram, upon resume, the fan on my ATI card remains at full speed
(loud), and does not throttle back to quiet (normal behaviour).

Booting with 'radeon.modeset=0' prevents this.

Please let me know what further information is needed.

Thanks!

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