bugGNU GRUB - Bugs: bug #42051, Grub2-EFI needs to enable GOP to...

 
 

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bug #42051: Grub2-EFI needs to enable GOP to boot on Toshiba w/7670m

Submitter:  Nicolas <snakehaveyou>
Submitted:  Fri 04 Apr 2014 05:08:28 PM UTC
   
 
Category:  Booting Severity:  Major
Priority:  5 - Normal Item Group:  Hardware-specific
Status:  None Privacy:  Public
Assigned to:  None Originator Name:  SnakeHaveYou
Open/Closed:  Open Release:  2.00
Release:  Reproducibility:  Every Time
Planned Release:  2.03+

Wed 02 Mar 2016 01:52:48 PM UTC, comment #1: 

Just load efi_gop and make GRUB go into graphics mode.

Vladimir Serbinenko <phcoder>
Group administrator
Fri 04 Apr 2014 05:08:28 PM UTC, original submission:  

Here's the problem:

When you try to boot OpenSUSE 13.1/Fedora 20(non tested with other distros) in UEFI mode, the UI and terminal screen will be shifted and corrupted with artifacts, or flashing.

Here are some pics of the shifted screen:

http://s1203.photobucket.com/user/SnakeHaveYou/media/20140322_010242_Night.jpg.html

http://s1203.photobucket.com/user/SnakeHaveYou/media/20140322_010401_Night.jpg.html



And here's a video of the flashing screen (only with Kernel 3.14):

https://www.youtube.com/watch?v=ogcsVK-6q6c



How to reproduce?:

Configuration 1:

- Kernel: 3.14
- Video driver: Open Source Radeon driver
- Bootloader: Grub2-EFI
- Issue: Flashing screen (even on console). Vertical lines. No mouse.
- Workaround: None

Configuration 2:

- Kernel: 3.11 to 3.13
- Video driver: Proprietary Catalyst. Latest beta
- Bootloader: Grub2-EFI
- Issue: Shifted screen. Vertical lines. Mouse on screen (pointer with artifacts)
- Workaround: Suspend and wake up system fix the issue. Will appear again after a restart.




When i can't reproduce it?:


Configuration 3:

- Kernel: 3.11 to 3.13
- Video driver: Open Source Radeon
- Bootloader: Grub2-EFI
- Issue: None

Configuration 4:

- Kernel: 3.11 to 3.13
- Video driver: Proprietary and Open Source
- Bootloader: rEFInd ONLY with GOP enabled
- Issue: None

Configuration 5:

- Kernel: 3.14
- Video driver: Open Source Radeon
- Bootloader: rEFInd ONLY with GOP enabled
- Issue: None

Configuration 6:

- With a non-EFI installation, i can;t reproduce the issue




My workaround is:

Install rEFInd and enable GOP mode in refind.conf. This is the only way i found to fix the issue..

Seems to be that there are some incompatibilities between the 7670m and/or Toshiba laptops with Grub2-EFI video modes.


Nicolas <snakehaveyou>

 

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Depends on the following items: None found

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    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-03-02 phcoder Item GroupAction Request Hardware-specific
        Planned ReleaseNone 2.03+

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