Created attachment 1645354 [details] Log for hardware description On clean install of Fedora 31 without modifying anything the brightness slider is shown in GNOME shell when it should be disabled because it has no use on desktop system. Installing and clicking on the right side of the top panel shows slider which shouldn't be there. This bug was previously posted on GNOME shell issues GitLab page and I as a poster of this bug was redirected here. Attachment to the GNOME GitLab issue is provided also as well as dmidecode.log per instructions.
Thanks, I have written a kernel patch which should fix this. Here is a scratch-build of the kernel with the the patch added, please give this a test run: https://koji.fedoraproject.org/koji/taskinfo?taskID=39687007 Note this is still building atm, it should be done in a couple of hours. See here for generic instructions for installing a kernel directly from koji: https://fedorapeople.org/~jwrdegoede/kernel-test-instructions.txt Note if you not have time to test right away, please at least download the files indicated in the instructions, test builds get removed after a couple of days to cleanup disk-space.
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 31 kernel bugs. Fedora 31 has now been rebased to 5.5.7-200.fc31. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 32, and are still experiencing this issue, please change the version to Fedora 32. If you experience different issues, please open a new bug report for those.
The quirk which I wrote for this is in kernel 5.5.7, so this should be fixed, closing.
(In reply to Hans de Goede from comment #3) > The quirk which I wrote for this is in kernel 5.5.7, so this should be > fixed, closing. Hello, I'm using fedora 35 and I still have this bug. I'm using the ryzen 7 5700G with integrated graphics. This problem was present on fedora 34 as well.
This is still an issue on Fedora 37 with Ryzen 7000 series.
(In reply to Lyosha Alexeev from comment #5) > This is still an issue on Fedora 37 with Ryzen 7000 series. Yes this still seems to be an issue on most AMD APU based desktops. Solving this unfortunately is not trivial. I have emailed a contact at AMD asking for help with this.
I've sent out this series that I believe should help the problem: https://patchwork.freedesktop.org/series/111745/ Can you have a try with it?
(In reply to Mario Limonciello from comment #7) > I've sent out this series that I believe should help the problem: > https://patchwork.freedesktop.org/series/111745/ > > Can you have a try with it? It works, thank you very much.
Would you mind replying to the series with a "Tested-by" tag? https://www.kernel.org/doc/html/latest/process/submitting-patches.html#using-reported-by-tested-by-reviewed-by-suggested-by-and-fixes
This didn't work on a Ryzen 7000 series CPU with disabled iGPU, applied to kernel 6.1.0 - the brightness slider is still there.
Did you apply all 3 patches? The last one should have changed that behavior by default even if amdgpu isn't loaded.
(In reply to Mario Limonciello from comment #11) > Did you apply all 3 patches? The last one should have changed that behavior > by default even if amdgpu isn't loaded. I did apply all changes from https://patchwork.freedesktop.org/series/111745/ with three files altered in total. # dmidecode --string chassis-type > Desktop # ls /sys/class/backlight > acpi_video0 # grep acpi_video_report_nolcd /proc/kallsyms > 0000000000000000 r __kstrtab_acpi_video_report_nolcd [video] > 0000000000000000 r __kstrtabns_acpi_video_report_nolcd [video] > 0000000000000000 r __ksymtab_acpi_video_report_nolcd [video] > 0000000000000000 T acpi_video_report_nolcd [video] # grep native_reported_nolcd /proc/kallsyms > 0000000000000000 b native_reported_nolcd [video] Of course, it is possible that I might have messed something up in the process.
I think the problem is that you didn't get the later version of the series but tested v1. V3 has a third patch you probably missed. This is the one that also makes it work if amdgpu doesn't detect an APU. https://patchwork.freedesktop.org/series/111755/ They're all merged into master now though. I suggest you retry with 6.2-rc2.
I patched 6.1.2 with the patch in master, and it works now, thanks!
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