0

I have an Intel Corporation UHD Graphics 620 graphics card. Whenever I try commands like sudo intel_backlight or sudo intel_gpu_top I get the same error:

(intel_gpu_top:1308) intel-mmio-CRITICAL: Test assertion failure function intel_mmio_use_pci_bar, file ../../lib/intel_mmio.c:145:
(intel_gpu_top:1308) intel-mmio-CRITICAL: Failed assertion: !(error != 0)
(intel_gpu_top:1308) intel-mmio-CRITICAL: Last errno: 1, Operation not permitted
(intel_gpu_top:1308) intel-mmio-CRITICAL: Couldn't map MMIO region
Stack trace:
  #0 [_init+0x7b87]
  #1 [_init+0x5420]
  #2 [_init+0xe85]
  #3 [__libc_start_main+0xe7]
  #4 [_init+0x1c92]
Test (null) failed.
**** DEBUG ****
(intel_gpu_top:1308) intel-chipset-DEBUG: Test requirement passed: pci_dev
(intel_gpu_top:1308) intel-mmio-CRITICAL: Test assertion failure function intel_mmio_use_pci_bar, file ../../lib/intel_mmio.c:145:
(intel_gpu_top:1308) intel-mmio-CRITICAL: Failed assertion: !(error != 0)
(intel_gpu_top:1308) intel-mmio-CRITICAL: Last errno: 1, Operation not permitted
(intel_gpu_top:1308) intel-mmio-CRITICAL: Couldn't map MMIO region
(intel_gpu_top:1308) igt-core-INFO: Stack trace:
(intel_gpu_top:1308) igt-core-INFO:   #0 [_init+0x7b87]
(intel_gpu_top:1308) igt-core-INFO:   #1 [_init+0x5420]
(intel_gpu_top:1308) igt-core-INFO:   #2 [_init+0xe85]
(intel_gpu_top:1308) igt-core-INFO:   #3 [__libc_start_main+0xe7]
(intel_gpu_top:1308) igt-core-INFO:   #4 [_init+0x1c92]
****  END  ****
FAIL (-1.000s)

why is this happening?

Snow
  • 133
  • 1
  • 9
  • you have secure boot enabled. – Rinzwind Mar 17 '20 at 11:59
  • should I disable it? is that a good idea? – Snow Mar 17 '20 at 12:08
  • @RinzwinD I went ahead and [disabled the secure boot](https://askubuntu.com/a/762255/618228). Hopefully there won't be any negative consequences – Snow Mar 18 '20 at 08:14
  • 1
    It is something we all did ;-) secure boot is a microsoft thing that locks down looking up and altering bios settings unless you have a signed key to access it. – Rinzwind Mar 18 '20 at 08:33

0 Answers0