** Description changed: [Impact] - * In any Ubuntu series, if user using a old GPU (which supported by + * In any Ubuntu series, if user using a old GPU (which supported by nvidia-390 only) then issuing glxinfo will get "Error: couldn't find RGB GLX visual or fbconfig". Which mean the Xorg doesn't load dri driver correctly. [Test Plan] - * install nvidia-390 on nvidia-390 supported system. - * prime-select on-demand - * reboot - * glxinfo - * after applying this patch, it will fall back to "ON" mode after reboot. + * install nvidia-390 on nvidia-390 supported system. + * prime-select on-demand + * reboot + * glxinfo + * after applying this patch, it will fall back to "ON" mode after reboot. [Where problems could occur] - * Since nvidia-390 doesn't support on-demand mode (RTD3 either). If a user stays in on-demand mode with 390 without problem, the after upgrading u-d-c and reboot. The mode will fall back to "ON" mode. - * From my point of view, it's fine because nvidia-390 doesn't support RTD3. Thus, the nvidia will always stay in "Active" stage no matter which mode it is. + * Since nvidia-390 doesn't support on-demand mode (RTD3 either). If a user stays in on-demand mode with 390 without problem, the after upgrading u-d-c and reboot. The mode will fall back to "ON" mode. + * From my point of view, it's fine because nvidia-390 doesn't support RTD3. Thus, the nvidia will always stay in "Active" stage no matter which mode it is. + * While there is no way to inform the user about this change, changing to the only supported default will avoid breaking GLX. + --- The regression from https://bugs.launchpad.net/ubuntu/+source/ubuntu- drivers-common/+bug/1942789. It impacts Jammy and Impish so far. [Steps to reproduce] 1. Find a GPU supports nvidia-390 2. ubuntu-drivers install nvidia:390 3. prime-select on-demand 4. glxinfo [Expected result] Shows intel or nvidia drives monitor [Actual result] Error: couldn't find RGB GLX visual or fbconfig Since we are all agree "on-demand" mode as default mode. Pre-talk with Alberto, on-demand doesn't support with nvidia-390 (no matter RTD3). We could consider to make it as performance mode and leave a note on nvidia-settings. I'll prepare some test packages.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1957094 Title: on-demand mode doesn't work with nvidia-390 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1957094/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
