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

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@kernel-bugs.osdl.org ReportedBy: jon+bugzilla.kernel.org@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!