desktop-packages team mailing list archive

[madbiologist <1326257@xxxxxxxxxxxxxxxxxx>]

The black screen after display rotation could be bug 1410238, which is
fixed in Trusty's xserver-xorg-video-intel 2:2.99.910-0ubuntu1.4.  This
bug is also fixed on Utopic and Vivid.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to nvidia-prime in Ubuntu.
https://bugs.launchpad.net/bugs/1326257

Title:
  [nvidia-prime] Cannot adjust brightness in guest session and results
  in black screen while changing the resolution

Status in HWE Next:
  Fix Released
Status in Nvidia:
  New
Status in OEM Priority Project:
  Fix Released
Status in OEM Priority Project trusty series:
  Fix Released
Status in nvidia-prime package in Ubuntu:
  In Progress
Status in ubuntu-drivers-common package in Ubuntu:
  Fix Released
Status in nvidia-prime source package in Precise:
  In Progress
Status in ubuntu-drivers-common source package in Precise:
  Invalid
Status in xorg-server-lts-saucy source package in Precise:
  New
Status in nvidia-prime source package in Trusty:
  Invalid
Status in ubuntu-drivers-common source package in Trusty:
  Fix Released
Status in xorg-server-lts-saucy source package in Trusty:
  New

Bug description:
  SRU Request

  Systems with Optimus (Intel+NVIDIA GPUs) can have problems with the
  backlight (private bug #1290694) and when detecting and switching to
  different resolutions (private bug #1285062). Using the intel driver
  (with SNA) works better than the current solution (the modesetting
  driver).

  [Impact]
   * Backlight control and resolution changes fail on some Optimus systems.

  [Test Case]
   * Select performance mode from the nvidia-settings panel and try to adjust the backlight or to cycle through the available resolutions
      - Expected: the backlight can be adjusted, and changing the resolution works.
      - Bad behavior: the backlight can't be adjusted and changing the resolution can some times result in a black screen.

  [Regression Potential]
   * Low, as the intel driver is more feature complete than modesetting.

  [Other Info]
   * N/A

  
  --

  Running the proprietary nvidia drivers in an Optimus config works
  (Intel+NVIDIA) can discover two issues:

  1. Cannot adjust brightness in the guest session (private bug #1290694)
  [Test Case]
   * Switch to guest session and adjust brightness from settings or hotkey or command line
      - Expected: Can adjust the brightness
      - Bad behavior: Cannot adjust brightness

  2. Black screen while changing the resolution (private bug #1285062)
  but switching to the guest session results in a black screen.
  [Test Case]
   * Go to display setting, set rotation to counterclockwise/clockwise/180 degrees and click apply
    - Expected results: Can switch display rotation successfully
    - Actual results: Black screen when switching display rotation

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1326257/+subscriptions