** Description changed: [impact] While booting into OOBE, the screen freeze [AMD W7500 only] [fix] AMDGPU would allocate pcie gen/lane dynamically after ASPM is enabled. Intel CPU may not support the dynamic lane/speed switching. - Turn off the dynamic gen/lane switching when platform is Intel. - amdgpu driver would pick the highest gen/lane instead. + - Detect Intel x86 systems that don't support dynamic switching + - Override the input caps to maximum supported for that system + - Force all PCIe levels to use the same settings, rather than try to configure each level differently. [test cases] 1. boot with w7500 2. the screen doesn't freeze and can't find the error message in dmesg. "amdgpu: [drm] *ERROR* [CRTC:72:crtc-0] flip_done timed out" [where the issue could happen] - low, just fix the pci gen/lane. + low, this could lead issue when setting higher speeds than supported.
** Description changed: [impact] While booting into OOBE, the screen freeze [AMD W7500 only] [fix] AMDGPU would allocate pcie gen/lane dynamically after ASPM is enabled. Intel CPU may not support the dynamic lane/speed switching. + Solution is, - Detect Intel x86 systems that don't support dynamic switching - Override the input caps to maximum supported for that system - Force all PCIe levels to use the same settings, rather than try to configure each level differently. [test cases] 1. boot with w7500 2. the screen doesn't freeze and can't find the error message in dmesg. "amdgpu: [drm] *ERROR* [CRTC:72:crtc-0] flip_done timed out" [where the issue could happen] low, this could lead issue when setting higher speeds than supported. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2027957 Title: Fix AMDGPU: the screen freeze with W7500 Status in linux package in Ubuntu: New Bug description: [impact] While booting into OOBE, the screen freeze [AMD W7500 only] [fix] AMDGPU would allocate pcie gen/lane dynamically after ASPM is enabled. Intel CPU may not support the dynamic lane/speed switching. Solution is, - Detect Intel x86 systems that don't support dynamic switching - Override the input caps to maximum supported for that system - Force all PCIe levels to use the same settings, rather than try to configure each level differently. [test cases] 1. boot with w7500 2. the screen doesn't freeze and can't find the error message in dmesg. "amdgpu: [drm] *ERROR* [CRTC:72:crtc-0] flip_done timed out" [where the issue could happen] low, this could lead issue when setting higher speeds than supported. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2027957/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
