Why rotating a screen results in a corrupt display when radeon driver is used ?
Issue
- After upgrading to RHEL7.4 user cannot rotate secondary screen.
- If screen is rotated GUI on secondary monitor gets corrupt/distorted
- Following errors are observed under log messages
radeon 0000:02:00.0: evergreen_surface_check_2d:282 cb pitch 1600 invalid must be aligned with 256
radeon 0000:02:00.0: evergreen_cs_track_validate_cb:431 cb[0] invalid (0x000000c7 0x0000752f 0x00190c80 0x01088468)
radeon 0000:02:00.0: evergreen_packet3_check:1949 invalid cmd stream 486
[drm:radeon_cs_ioctl [radeon]] *ERROR* Invalid command stream !
Environment
- Red Hat Enterprise Linux 7.4
- xorg-x11-drv-ati
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