broken DRI on phase2v12 and "fix"

[Manuel Estrada <ranty@atdot.org>]

	hello all,

running glxinfo on a vanilla phase2v12 xserver-xfree86 reports:

-----------8<---------------------------8<----------------------
Xlib: sequence lost (0x10000 > 0x14) in reply type 0x0!
X Error of failed request:  BadLength (poly request too large or
internal Xlib length error)
  Major opcode of failed request:  0 ()
  Serial number of failed request:  0
  Current serial number in output stream:  20
-----------8<---------------------------8<----------------------

The "fix":

Replacing "/usr/X11R6/lib/modules/extensions/libdri.a"  with the same
file from v5 fixes the problem.

I know this is not the right fix, but at least narrows bug finding to
that certain file and, non the less, it brings DRI back to a working
state for users.

In case it may be helpfull, my cut down X log is:


-----------8<---------------------------8<----------------------
[snip]
(0): [drm] created "mga" driver at busid "PCI:1:5:0"
(0): [drm] added 4096 byte SAREA at 0xc3fd1000
(0): [drm] mapped SAREA 0xc3fd1000 to 0x4001b000
(0): [drm] framebuffer handle = 0xdc000000
(0): [drm] added 1 reserved context for kernel
(II) MGA(0): [drm] Registers = 0xd8000000
[drm] drmAgpEnabled succeeded
(II) MGA(0): WARP Microcode Loaded
(II) MGA(0): [drm] calced backoffset: 0x501000
(II) MGA(0): [drm] added 31 65536 byte DMA buffers
(II) MGA(0): [drm] Mga Dma Initialization start
(II) MGA(0): [drm] Mga Dma Initialization done
(II) MGA(0): [drm] Initialized Dma Engine
(II) MGA(0): [drm] dma control initialized, using IRQ 10
[snip]
(0): [drm] installed DRM signal handler
(0): [DRI] installation complete
(II) MGA(0): direct rendering enabled
(II) MGA(0): Using overlay video
[snip]
-----------8<---------------------------8<----------------------


I am upgrading to v13 right now and will report back weather the bug
persists or not.


	Thanks for a great job

		Manuel

-------------------------------------------------
	Manuel Estrada

	Ranty@atdot.org
-------------------------------------------------
God grant us the serenity to accept the things we cannot change, courage to
change the things we can, and wisdom to know the difference.