[Macbook Pro 8,2] Screen blanks when calling vgaswitcheroo

[Rohan Garg]

Hi
By default when you try and switch graphics card on a Macbook Pro 8,2 from the ATI card to the Intel card , the screen is blanked and never turned on. This is due to the driver not knowing about the LVDS Panel mode since the machine was started with the discrete card on.

This patch http://cgit.freedesktop.org/~mlankhorst/linux/commit/?id=ae7b687c2a57ec50a9d3dde7b0a80a262fdc8c8 fixes graphics card switching.

I have applied this patch on the 3.9.1 and 3.8.2 upstream kernels and it fixes the issue for me.

Could this possibly be fixed for S and be SRU'd for Raring?
---
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: shadeslayer 2556 F.... pulseaudio
 /dev/snd/controlC0: shadeslayer 2556 F.... pulseaudio
DistroRelease: Ubuntu 13.04
HibernationDevice: RESUME=UUID=f6d8363f-0b01-42c3-b0bd-f859a365fd6c
InstallationDate: Installed on 2013-03-05 (49 days ago)
InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130304)
MachineType: Apple Inc. MacBookPro8,2
MarkForUpload: True
Package: linux (not installed)
ProcFB:
 0 inteldrmfb
 1 radeondrmfb
ProcKernelCmdLine: ro root=/dev/mapper/kubuntu--vg-root quiet splash initrd=\initrd.img-3.8.0-17-generic
ProcVersionSignature: Ubuntu 3.8.0-17.27-generic 3.8.6
RelatedPackageVersions:
 linux-restricted-modules-3.8.0-17-generic N/A
 linux-backports-modules-3.8.0-17-generic N/A
 linux-firmware 1.106
Tags: raring
Uname: Linux 3.8.0-17-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 01/24/12
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP81.88Z.0047.B27.1201241646
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-94245A3940C91C80
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro8,2
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-94245A3940C91C80
dmi.modalias: dmi:bvnAppleInc.:bvrMBP81.88Z.0047.B27.1201241646:bd01/24/12:svnAppleInc.:pnMacBookPro8,2:pvr1.0:rvnAppleInc.:rnMac-94245A3940C91C80:rvrMacBookPro8,2:cvnAppleInc.:ct10:cvrMac-94245A3940C91C80:
dmi.product.name: MacBookPro8,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1171940

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Rohan Garg (rohangarg)]

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[Sebastian Rühl (sebastian-ruehl)]

I forgot to mention: If I boot the kernel with refind without any parameters I have to type in my luks password blindly and the the system boots up and I can hear the login bell (but don't have any display).

[Sebastian Rühl (sebastian-ruehl)]

Sorry wrong bug, but maybe it applies here too... this comment above was meant to be on this one Bug #1178747

[glance (glance-acc)]

Whats the next step to SRU this for raring?

[penalvch (penalvch)]

Rohan Garg, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please just make a comment to this.

if reproducible, could you also please test the latest upstream kernel available (v13.3-rc3, as rc4 doesn't have all the necessary files) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc3

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]