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#1 2023-11-05 16:27:26

ArthurBorsboom
Member
Registered: 2014-05-20
Posts: 56

Asus TUF Gaming X670E bios update results in black screen (amdgpu BAR)

After a motherboard BIOS update of the Asus TUF Gaming X670E-Plus Wifi, booting Arch Linux results in an instant black screen.
I have found a clue to the possible cause including a workaround, which I want to share to help others.

I am guessing that the BIOS feature "BAR resize support" broke (bug?), which is enabled by default (= 'Load optimized defaults').
Possibly this issue only appears with a specific kernel version (6.5.9) and a specific graphics card (AMD RX580).
To workaround the issue, the BAR resize support setting has to be changed to "Disabled".

BIOS information

  • Name: TUF GAMING X670E-PLUS WIFI BIOS

  • Version working: 1636 - 2023/08/04

  • Version broken: 1813 - 2023/11/01

BIOS BAR setting

Kernel logs

If anybody knows a permanent solution where BAR support can be re-enabled without downgrading the BIOS, then I am all ears.

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