Latest working kernel version:
Earliest failing kernel version:
Distribution: Debian Sid amd64
Hardware Environment: Thinkpad T61 8897 (GM965)
Software Environment: 
drm: 2.4.3+git+20090105+a8c5480-1
xserver: 1.5.99.901
xf86-video-intel: 2.6.0

Problem Description:

Before 2.6.29-rc2, I couldn't even run Xorg without having some garbled fonts and gtk widgets (like http://molly.corsac.net/~corsac/screen.png)

Starting 2.6.29-rc2 (and the drm-next merge I guess) I can know run Xorg, but I still have various problems:
- X cursor is garbled (can make a screenshot later if needed)
- at start, I have some WARNINGs:

[    1.152254] ------------[ cut here ]------------
[    1.152260] WARNING: at drivers/gpu/drm/drm_crtc.c:213 drm_mode_object_get+0x
46/0xac [drm]()
[    1.152265] Hardware name: 8897CTO
[    1.152268] drm_mode_object_get called w/o mode_config lock
[    1.152272] Modules linked in: i915(+) fb drm i2c_algo_bit cfbcopyarea cfbimg
blt cfbfillrect acpi_cpufreq processor
[    1.152291] Pid: 493, comm: modprobe Not tainted 2.6.29-rc2 #45
[    1.152295] Call Trace:
[    1.152308]  [<ffffffff8023b15d>] warn_slowpath+0xd8/0x112
[    1.152318]  [<ffffffff80230cbc>] dequeue_entity+0xf/0x102
[    1.152325]  [<ffffffff8023198d>] dequeue_task_fair+0x1c/0x90
[    1.152336]  [<ffffffff804d67a3>] thread_return+0x3d/0xc6
[    1.152344]  [<ffffffff80243c3a>] lock_timer_base+0x26/0x4b
[    1.152350]  [<ffffffff80243cb1>] try_to_del_timer_sync+0x52/0x5b
[    1.152359]  [<ffffffff8020cb8e>] reschedule_interrupt+0xe/0x20
[    1.152368]  [<ffffffff80361fd9>] delay_tsc+0x0/0x3a
[    1.152403]  [<ffffffffa0035009>] drm_mode_object_get+0x46/0xac [drm]
[    1.152437]  [<ffffffffa0035157>] drm_mode_connector_update_edid_property+0xe8/0x163 [drm]
[    1.152469]  [<ffffffffa0039922>] drm_get_edid+0x176/0x1d8 [drm]
[    1.152499]  [<ffffffffa0075015>] intel_ddc_get_modes+0x2d/0x4b [i915]
[    1.152523]  [<ffffffffa0073566>] intel_lvds_init+0x10c/0x2ce [i915]
[    1.152547]  [<ffffffffa0072232>] intel_modeset_init+0x339/0x609 [i915]
[    1.152569]  [<ffffffffa00680f4>] i915_driver_load+0x770/0x7ca [i915]
[    1.152604]  [<ffffffffa0031628>] drm_get_dev+0x313/0x3d3 [drm]
[    1.152635]  [<ffffffffa002cdbe>] drm_init+0x6e/0xa5 [drm]
[    1.152656]  [<ffffffffa008c000>] i915_init+0x0/0x4c [i915]
[    1.152662]  [<ffffffff80209051>] _stext+0x51/0x120
[    1.152669]  [<ffffffff8035fc12>] __up_read+0x13/0x8d
[    1.152679]  [<ffffffff802506e7>] __blocking_notifier_call_chain+0x51/0x5f
[    1.152687]  [<ffffffff8025e7cb>] sys_init_module+0xa0/0x1ba
[    1.152693]  [<ffffffff8020bedb>] system_call_fastpath+0x16/0x1b
[    1.152698] ---[ end trace 8f4f96a97eeb629e ]---
[    1.152734] ------------[ cut here ]------------

And trying to restart Xorg for some reason, it fails (the screen is blocked at the moment) and I have in Xorg.0.log:

Jan 17 16:51:47 hidalgo kernel: [  533.088113] [drm:i915_wait_irq] *ERROR* EBUSY -- rec: 1 emitted: 2


with in dmesg:

[  533.088113] [drm:i915_wait_irq] *ERROR* EBUSY -- rec: 1 emitted: 2

and no vt switch is possible atm.

If you need more info, please ask.

xorg.conf follows:

Section "Device"
  Driver  "intel"
  BusId   "PCI:0:2:0"
  Identifier  "intel"
  Option "FramebufferCompression" "on"
  Option "Legacy3D"  "false"
  Option "AccelMethod" "UXA"
  Option "XvPreferOverlay" "on"
  Option "XvMC" "on"
EndSection

I'll try without any xorg.conf.