https://bugzilla.kernel.org/show_bug.cgi?id=79081
Bug ID: 79081 Summary: radeon with dpm at low profile still more power consuming than catalyst Product: Drivers Version: 2.5 Kernel Version: 3.16-rc2 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: vova7890@mail.ru Regression: No
Created attachment 141181 --> https://bugzilla.kernel.org/attachment.cgi?id=141181&action=edit dmesg
I don't know why and where, but open source driver is consuming more power than with catalyst for about 2-3 watts. For example, if switchoff display, and don't touch notebook, wia ssh I see powertop says with catalyst use only 4.43 watts, and with radeon it usualy closer to 7 watts. DPM is enabled, hdmi is disabled, battery profile is activated... See dmesg output.
Notebook: HP Probook 4242s GPU: Radeon HD 7420G Mesa: 10.2.2 Kernel: 3.16-rc2