Public bug reported: [Impact] On AMD RENOIR gpu, after S3 backlight brightness can not be changed.
[Fix] Pevious patch prevent loading iram, then dmcu can not work. Remove unused check to load iram right. Then backlight works well. [Test] Verified on hardware, after 10 times of S3, backlight can be changed by hotkey. [Regression Potential] Low Upstream fix, backports is minimal. RENOIR is only supported on oem-5.6, no focal patch. Harry Wentland (1): Revert "drm/amd/display: disable dcn20 abm feature for bring up" drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) ** Affects: hwe-next Importance: Undecided Status: New ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: oem-priority originate-from-1868640 sutton ** Tags added: oem-priority originate-from-1868640 sutton -- 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/1886785 Title: [SRU][PATCH 0/1][oem-5.6] fix amd RENOIR screen backlight issue. Status in HWE Next: New Status in linux package in Ubuntu: New Bug description: [Impact] On AMD RENOIR gpu, after S3 backlight brightness can not be changed. [Fix] Pevious patch prevent loading iram, then dmcu can not work. Remove unused check to load iram right. Then backlight works well. [Test] Verified on hardware, after 10 times of S3, backlight can be changed by hotkey. [Regression Potential] Low Upstream fix, backports is minimal. RENOIR is only supported on oem-5.6, no focal patch. Harry Wentland (1): Revert "drm/amd/display: disable dcn20 abm feature for bring up" drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1886785/+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