Radeon HD 6970M/6990M crash on iMac on boot - only nomodeset helps

Submitted by han..@..il.com

Assigned to Default DRI bug account

Link to original bug (#104738)

Description

Created attachment 136905
dmesg

Dear Developers!

I have this bug on different Linux kernels. Only with 4.15.0-041500rc8 i am able to boot, but there is no hardware acceleration.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743427

If you need more informations please let me know.

Best regards,

Hans

Attachment 136905, "dmesg":
crash.txt