[Bug 79081] New: radeon with dpm at low profile still more power consuming than catalyst

[Bug 79081] New: radeon with dpm at low profile still more power consuming than catalyst

[bugzilla-daemon]

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

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