[Bug 64774] nouveau GF108 kernel crash in optimus mode when enabling external display output - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 64774] nouveau GF108 kernel crash in optimus mode when enabling external display output
Date: Thu, 18 Jul 2013 21:15:08 +0000	[thread overview]
Message-ID: <bug-64774-8800-zTiOREDBOB@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-64774-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>

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https://bugs.freedesktop.org/show_bug.cgi?id=64774

--- Comment #13 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Outputs certainly *appear* to be detected. What makes you say they're not?

[    2.882654] nouveau  [     DRM] DCB outp 00: 01800323 00010034
[    2.882656] nouveau  [     DRM] DCB outp 01: 02811300 00000000
[    2.882657] nouveau  [     DRM] DCB outp 02: 028223a6 0f220010
[    2.882658] nouveau  [     DRM] DCB outp 03: 02822362 00020010
[    2.882659] nouveau  [     DRM] DCB outp 04: 048333b6 0f220010
[    2.882660] nouveau  [     DRM] DCB outp 05: 04833372 00020010
[    2.882662] nouveau  [     DRM] DCB outp 06: 088443c6 0f220010
[    2.882663] nouveau  [     DRM] DCB outp 07: 08844382 00020010
[    2.882664] nouveau  [     DRM] DCB conn 00: 00000040
[    2.882666] nouveau  [     DRM] DCB conn 01: 00000100
[    2.882667] nouveau  [     DRM] DCB conn 02: 00110246
[    2.882668] nouveau  [     DRM] DCB conn 03: 00220346
[    2.882669] nouveau  [     DRM] DCB conn 04: 01400446
[    3.023865] nouveau  [     DRM] allocated 1920x1080 fb: 0x60000, bo
ffff8803285f9c00

I assume you have a 1920x1080 screen hooked up to the DVI?

You can look at the KMS status in /sys/class/drm/ -- you should see
cardN-DVI-I-N  directories. xrandr should also provide accurate status, e.g.:

$ grep . /sys/class/drm/card*-*/status 
/sys/class/drm/card0-DVI-I-1/status:connected
/sys/class/drm/card0-DVI-I-2/status:disconnected

However it may end up being hidden due to vgaswitcheroo -- so make sure to look
into that too. (Unfortunately I know next to nothing about vgaswitcheroo, but
I'm sure Google knows more.)

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