[Desktop-packages] [Bug 1765363] Re: prime-select intel is not powering off the nvidia card

[Jan Alexander]

I can confirm the same issue on 18.04 using Gigabyte AERO 15x v8 with
Nvidia GTX 1070 MaxQ. The `prime-select intel` method leaves the card
powered on, even though the vgaswitcheroo/switch indicates it's off -
the system power draw is ~ 20W.

After installing bbswitch and turning the card off that way (had to mask
off the nvidia-fallback to prevent manual loading of the nouveau
module), the power draw drops to ~ 10W so the card is indeed powered off
in that case.

There is something broken in nouveau driver for my system as it is
unable to power down the card using the vgaswitcheroo method, when
running with nouveau.runpm=0.

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https://bugs.launchpad.net/bugs/1765363

Title:
  prime-select intel is not powering off the nvidia card

Status in nvidia-prime package in Ubuntu:
  Confirmed

Bug description:
  Right now, it seems that prime-select intel makes sure the nvidia driver is 
not loaded, as nvidia-settings reports.
  But my power consumption is > 20W.
  cat /proc/acpi/bbswitch reports the card is still on. 

  
  If bbswitch and powertop are reliable, then the nvidia card is still powered.
  This is a thinkpad w520 in Optimus mode.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: nvidia-prime 0.8.7
  ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
  Uname: Linux 4.15.0-15-generic x86_64
  ApportVersion: 2.20.9-0ubuntu5
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Apr 19 19:56:21 2018
  Dependencies:
   
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2017-12-14 (125 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  PackageArchitecture: all
  SourcePackage: nvidia-prime
  UpgradeStatus: Upgraded to bionic on 2018-03-09 (41 days ago)

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[Desktop-packages] [Bug 1760731] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()

[Jan Alexander]

** Information type changed from Private to Public

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https://bugs.launchpad.net/bugs/1760731

Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a()

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  Needed to logout and login again to get desktop working. After login,
  this crash report appeared.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: gnome-shell 3.28.0-0ubuntu2 [modified: 
usr/lib/gnome-shell/libgnome-shell.so]
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu2
  Architecture: amd64
  CurrentDesktop: GNOME-Greeter:GNOME
  Date: Mon Apr  2 15:45:11 2018
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  GsettingsChanges:
   
  InstallationDate: Installed on 2018-03-26 (7 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180325)
  ProcCmdline: /usr/bin/gnome-shell
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=
   LANG=en_US.UTF-8
   SHELL=/bin/false
  SegvAnalysis:
   Segfault happened at: 0x7f6fdb853c0f 
:  mov(%rdx),%rdx
   PC (0x7f6fdb853c0f) ok
   source "(%rdx)" (0x1f0020) not located in a known VMA region (needed 
readable region)!
   destination "%rdx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
   g_type_check_instance_is_fundamentally_a () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libnm.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libnm.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libnm.so.0
  Title: gnome-shell crashed with SIGSEGV in 
g_type_check_instance_is_fundamentally_a()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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