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On 2015-10-29T17:39:14+00:00 Cristian Aravena Romero wrote:

Open bug in launchpad.net
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1511473

dmesg:
[ 163.227218] nouveau E[ PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT at 
0x002140 [ !ENGINE ]

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
nouveau/+bug/1511473/comments/2

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On 2015-10-29T17:44:08+00:00 Ilia Mirkin wrote:

... gpu comes ok ...

[  133.975729] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type 
mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
[  133.975805] ACPI: \_SB_.PCI0.PEG0.PEGP: failed to evaluate _DSM
[  133.975809] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type 
mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
[  149.703743] r8169 0000:03:00.0 eth0: link down
[  163.217080] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type 
mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
[  163.217166] ACPI: \_SB_.PCI0.PEG0.PEGP: failed to evaluate _DSM
[  163.217170] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type 
mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
[  163.227218] nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT 
at 0x002140 [ !ENGINE ]

Weird, I guess it doesn't come out of runpm sometimes? You can
workaround this by booting with nouveau.runpm=0 but it will leave the
nvidia gpu on the whole time.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
nouveau/+bug/1511473/comments/3


** Changed in: nouveau
       Status: Unknown => Confirmed

** Changed in: nouveau
   Importance: Unknown => Medium

-- 
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which is subscribed to xserver-xorg-video-nouveau in Ubuntu.
https://bugs.launchpad.net/bugs/1511473

Title:
  nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT at
  0x002140 [ !ENGINE ]

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