Comment # 10
on bug 106548
from Francesco Balestrieri
Indeed, after some more investigation I found out that the test case uses (via MDAPI) the root-only interface: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_boost_freq_mhz /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_max_freq_mhz /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_min_freq_mhz to ask the kernel to maintain a static GPU frequency, and then reads it back to check that it stays within a range of the requested value. The test fails because the value it reads back is not what it requested (reproduced with drm-tip). I still don't have dmesg output with debug logs enabled but I'l try to get it next week. For the records, this is what the test prints out once it is run as root: [ RUN ] GfxDrv_DriverAcceptanceQuery.GL_GPU_FREQ_OVERRIDE_MDAPI AvgGpuCoreFrequencyMHz = 947 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 948 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 948 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 947 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 948 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 947 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 948 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 947 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 947 ( expected in range [855, 950] ) AvgGpuCoreFrequencyMHz = 797 ( expected in range [855, 950] ) => OUT OF RANGE!
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