Apologies for not having more in the way of diagnostic info.
Every one of the 4.17-rcX series has hung during boot at the point where
"acpid" starts up. Beginning with -rc5, the boot actually proceeds to
completion after an "uncomfortably" long delay.
Attempting to run the X11 server results in the following diagnostic
output in "/var/log/Xorg.0.log":
(...)
[ 109.951] (--) Depth 24 pixmap format is 32 bpp
[ 109.951] (II) RADEON(0): [DRI2] Setup complete
[ 109.951] (II) RADEON(0): [DRI2] DRI driver: r600
[ 109.951] (II) RADEON(0): [DRI2] VDPAU driver: r600
[ 109.951] Failed to map cursor buffer memory
[ 109.951] Failed to map cursor buffer memory
[ 109.951] Failed to map cursor buffer memory
[ 109.952] Failed to map cursor buffer memory
[ 109.952] Failed to map cursor buffer memory
[ 109.952] Failed to map cursor buffer memory
[ 109.952] (II) RADEON(0): Front buffer size: 8160K
[ 109.952] (II) RADEON(0): VRAM usage limit set to 218167K
[ 109.952] (==) RADEON(0): DRI3 disabled
[ 109.952] (==) RADEON(0): Backing store enabled
[ 109.952] (II) RADEON(0): Direct rendering enabled
[ 109.952] (II) EXA(0): Driver allocated offscreen pixmaps
[ 109.952] (II) EXA(0): Driver registered support for the following
operations:
[ 109.952] (II) Solid
[ 109.952] (II) Copy
[ 109.952] (II) Composite (RENDER acceleration)
[ 109.952] (II) UploadToScreen
[ 109.952] (II) DownloadFromScreen
[ 109.952] (EE)
Fatal server error:
[ 109.952] (EE) failed to map shader -75
[ 109.952] (EE)
[ 109.952] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 109.952] (EE) Please also check the log file at "/var/log/Xorg.0.log" for
additional information.
[ 109.952] (EE)
[ 109.971] (EE) Server terminated with error (1). Closing log file.
Everything works normally with a 4.16 kernel.
--Bob
