https://bugzilla.kernel.org/show_bug.cgi?id=206309 --- Comment #5 from jerbear3.14159@xxxxxxxxx --- It's a Linux bug! I finally set aside a day to waste on Windows installation to check whether it behaves the same way. Windows 10 repeatedly crashed and bricked itself because of course it did. It works perfectly on Windows 8.1 with the official graphics driver on Dell's website. https://dl.dell.com/FOLDER02868143M/5/AMD-FirePro-Graphics-Driver_CWRN6_WIN_14.502.1005_A02_02.EXE Memory Clock (MHz)/Shader Clock (MHz): Idle: 150/300 Battery: 600/400 AC: 1000/900 On Xubuntu 23.10 it's more like: Idle: 150/300 Battery: 150/300 AC: 1000/900 (but it drops down to 150/300 after unplugging, and requires a reboot to bring it back up) I've gone through 2 official 130W Dell chargers and 2 90W Targus universal chargers. Linux exhibits the power management bug regardless. I have never tried a docking station. uname -a gives: Linux 6.5.0-44-generic #44-Ubuntu SMP PREEMPT_DYNAMIC Fri Jun 7 15:10:09 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux The only reprieve I've found is to follow these steps: 1. Boot with the laptop plugged in. If using a 90W charger and this is a cold start (as opposed to a reboot), need to reboot as soon as it finishes booting. 2. echo -n high > /sys/class/drm/card1/device/power_dpm_force_performance_level 3. Pray 4. Unplug 5. Now for some reason, there's a small chance that the clock speeds stick high and don't drop. If not, start over from step 1. If yes, then typically (but not always) I can repeatedly unplug+plug safely up until it's time to shut down. Problems I've encountered with this method include: - Low success rate - Runs hotter/harms battery life - If I'm working unplugged, I need to manually lower the clock speeds down to 600/400. If I forget and leave it at 1000/900 and try to do anything graphically intense, the battery can't provide enough power and the entire laptop shuts down immediately. You can see that Windows does this automatically when unplugged. All in all, this is a nightmare for a game developer who needs maximum GPU performance. I live in constant fear of bumping the power cord out or needing to switch rooms. I'm happy to provide any additional information, but glancing at the amdgpu source code it seems a little over my head! -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
