https://bugs.freedesktop.org/show_bug.cgi?id=42854
[email protected] changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #4 from [email protected] --- I can confirm this issue as well. Latest 1.7 drivers. This is very clearly a bug. Dual output in Windows does not lead to maxing out the engine or memory clocks. There is no way simple 2d output requires the same amount of work from the GPU as graphics-intesive 3D games. With two DVI outputs: --------------------- cat /sys/kernel/debug/dri/0/radeon_pm_info default engine clock: 800000 kHz current engine clock: 799940 kHz default memory clock: 1250000 kHz current memory clock: 1250000 kHz cat /sys/class/drm/card0/device/power_method profile cat /sys/class/drm/card0/device/power_profile low sensors radeon-pci-0100 Adapter: PCI adapter temp1: +62.5 C With one DVI output -------------------- cat /sys/kernel/debug/dri/0/radeon_pm_info default engine clock: 800000 kHz current engine clock: 249990 kHz default memory clock: 1250000 kHz current memory clock: 150000 kHz Adapter: PCI adapter temp1: +53.0 C (less than 30 seconds after switching) Adapter: PCI adapter temp1: +42.5 C (stablized after a few mins) --- Comment #5 from [email protected] --- I should add that using the proprietary ATI drivers on Linux, dual-head is cool and quiet as well -- You are receiving this mail because: You are the assignee for the bug.
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