** Changed in: oem-priority
Assignee: jeremyszu (os369510) => Dirk Su (dirksu)
** Description changed:
RTD3 is a nvidia GPU feature to support runtime suspend.
On-demand would be a X offloading feature.
They are independent, according to discussion on
https://github.com/tseliot/ubuntu-drivers-common/issues/55.
Some parts need to be adjusted, e.g.
```
- # If we are dealing with NVIDIA PRIME, and runtimepm
- # is supported, enable it
- if (os.path.isfile('/run/nvidia_runtimepm_supported') and
- os.path.isfile('/usr/bin/prime-select')):
- print('Trying to select the on-demand PRIME profile')
- try:
- subprocess.call(['prime-select', 'on-demand'])
- except:
- pass
-
- # Create the override file for gpu-manager
- with open('/etc/u-d-c-nvidia-runtimepm-override', 'w') as f:
- f.write('# File created by ubuntu-drivers\n')
+ # If we are dealing with NVIDIA PRIME, and runtimepm
+ # is supported, enable it
+ if (os.path.isfile('/run/nvidia_runtimepm_supported') and
+ os.path.isfile('/usr/bin/prime-select')):
+ print('Trying to select the on-demand PRIME profile')
+ try:
+ subprocess.call(['prime-select', 'on-demand'])
+ except:
+ pass
+
+ # Create the override file for gpu-manager
+ with open('/etc/u-d-c-nvidia-runtimepm-override', 'w') as f:
+ f.write('# File created by ubuntu-drivers\n')
```
+ ---
+
+ [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]
+
+ 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.
+
+ nvidia-prime (0.8.16.2~0.21.04.1) hirsute; 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).
+
X-HWE-Bug: Bug #1946434
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https://bugs.launchpad.net/bugs/1942789
Title:
On-demand and RTD3 need to be separated
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