APPLIED(B,C): [PATCH 0/2] [SRU][B/C/D/OEM]Fix Xorg crash with nomodeset when BIOS

[Khaled Elmously]

On 2019-01-22 15:05:44 , Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1812797
> 
> [Impact]
> On dual GPU platform, BIOS set frame buffer addr to 64-bit,
> usually when CSM=NO setting in BIOS.
> When no proper GPU driver loaded, Xorg driver will use the wrong fb addr,
> then crash.
> 
> [Fix]
> Add 64-bit efifb support, make Xorg find the correct GPU fb addr.
> If still failed, use the first GPU as default.
> 
> [Test]
> Tested on Intel and NV dual GPU platform. Works fine.
> 
> [Regression Potential]
> Upstream fix, low risk.
> Verified on ThinkPad P1/P52.
> 
> Aaron Ma (2):
>   vgaarb: Add support for 64-bit frame buffer address
>   vgaarb: Keep adding VGA device in queue
> 
>  drivers/gpu/vga/vgaarb.c | 21 ++++++++++++++-------
>  1 file changed, 14 insertions(+), 7 deletions(-)
> 
> -- 
> 2.17.1
> 
> 
> -- 
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team