Comment # 11
on bug 99316
from Samuel Anderson
(In reply to Mathias from comment #10) > I have also a Dell notebook with the same dGPU, but cannot reproduce your > error with Ubuntu 16.04 kernel 4.10.0. > > Instead I have the problem, that the dGPU only gets powered at a low > frequency, and becomes slower than the Intel GPU by doing so. > > When I run glmark2, I look at "/sys/kernel/debug/dri/0/radeon_pm_info" and > always see the following output: > > default engine clock: 925000 kHz > current engine clock: 299990 kHz > default memory clock: 1000000 kHz > current memory clock: 148990 kHz > voltage: 1225 mV > PCIE lanes: 16 > > Btw.: This dGPU cannot be connected to a CRT directly, as there seems to be > no connection available at all. Is the GPU at low power while plugged in, or always? glmark2 while plugged in instantly crashes for me, but on battery I get a score of 1395 which is horrible compared to the 3680 from my integrated card. Plus horrible rendering artifacts. But I'm not sure if that is really related to my main problem. This is "/sys/kernel/debug/dri/0/radeon_pm_info" on battery with glmark2 for me: uvd vclk: 0 dclk: 0 power level 2 sclk: 40000 mclk: 30000 vddc: 900 vddci: 0 pcie gen: 3 Oddly enough, a completely different format than yours. This card seems to have a multitude of problems
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