** Description changed: As per LP: #1942307 we now set on-demand as the default. This however, causes "prime-select on-demand", called by ubuntu-drivers, not to even try to detect RTD3 and to enable it, since "on-demand" is already set. We cannot make informed choices about RTD3 in the postinstallation script of nvidia-prime, therefore we should simply drop the check that prime-select makes to abort if the new profile is determined to be the same as the current profile. - --- [Impact] * Ubuntu will set GPU mode to performance as default which may use more power * User can't use GPU for other purpose (eg: deep-learning) if RTD3 is not supported * According to Nvidia README, the RTD3 doesn't support on non-laptop machine [Test Plan] * Install Ubuntu, and then execute 'ubuntu-drivers install' to install GPU driver. After the installation, reboot the system. Execute "prime-select query" should get "on-demand" * Old GPU (which supported by nvidia-390 only) will keep in performance mode, refer LP:1957094. Execute "prime-select query" should get "nvidia" * On non-laptop machine. Can set GPU mode to on-demand * On laptop with GPU in runtime PM support list. Set GPU mode to on-demand and Nvidia driver is loaded with "NVreg_DynamicPowerManagement=0x02" [Where problems could occur] * With GPU supported RTD3 not able enable runtime PM on non-laptop. But based on the Nvidia README, this case shall not happened. [Other Info] Changelogs: nvidia-prime (0.8.16~0.20.04.2) focal; urgency=medium [ Jeremy Szu ] * Set on-demand mode as default nvidia mode (LP: #1942307) [ Alberto Milone ] * prime-select: - Detect chassis type and enable RTD3 only on laptops (LP: #1942788). - on-demand mode doesn't need to depend on RTD3 (LP: #1942789). - Use bootvga detection when last_gfx_boot is not available. - Don't check the current profile when setting a profile (LP: #1946476). - - Catch BrokenPipeError. - - Use bootvga detection when last_gfx_boot is - not available. + - Handle BrokenPipeError (LP: #1965520).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946476 Title: New on-demand default causes RTD3 never to be enabled To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1946476/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
