[Bug 1946434] Re: SRU: Set on-demand as default, enable RTD3 only on laptops and decouple on-demand with RTD3
Dirk Su
1946434 at bugs.launchpad.net
Tue Oct 12 02:22:43 UTC 2021
Upload debdiff for focal
** Description changed:
[Impact]
- * 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
+ * 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]
- * With Nvidia driver installed
- * 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"
+ * Install 20.04.3 with "Third-party packages". After the installation, reboot the system. Execute "prime-select query" should get "on-demand"
+ * 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.
+ * on-demand mode supported after nvidia driver 450. And focal does not have nvidia driver lower than 450.
+ * 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]
** Patch removed: "nvidia-prime_0.8.16~0.20.04.2.debdiff"
https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1946434/+attachment/5531433/+files/nvidia-prime_0.8.16~0.20.04.2.debdiff
** Patch added: "nvidia-prime_0.8.16~0.20.04.2.debdiff"
https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1946434/+attachment/5532014/+files/nvidia-prime_0.8.16~0.20.04.2.debdiff
** Tags added: originate-from-1942307
** Tags added: originate-from-1946476
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https://bugs.launchpad.net/bugs/1946434
Title:
SRU: Set on-demand as default, enable RTD3 only on laptops and
decouple on-demand with RTD3
Status in OEM Priority Project:
Confirmed
Status in nvidia-prime package in Ubuntu:
New
Bug description:
[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 20.04.3 with "Third-party packages". After the installation, reboot the system. Execute "prime-select query" should get "on-demand"
* 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]
* on-demand mode supported after nvidia driver 450. And focal does not have nvidia driver lower than 450.
* 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]
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