[Bug 1946434] Re: SRU: Set on-demand as default, enable RTD3 only on laptops and decouple on-demand with RTD3

[Dirk Su]

** Description changed:

  [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"
+  * 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"
   * 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)
+   [ 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.
- 
+   [ 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)
+   [ 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).
+   [ 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).

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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:
  Invalid
Status in nvidia-prime source package in Focal:
  In Progress
Status in nvidia-prime source package in Hirsute:
  In Progress

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 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"
   * 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).

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