I can confirm this bug on an with an Intel D945GCLF, X never frozen here but the attached monitor is only recognized as 800x600 which is not true at all.

[   44.456967] i2c-adapter i2c-0: unable to read EDID block.                                                                                                                                 
[   44.456976] i915 0000:00:02.0: VGA-1: no EDID data                                                                                                                                        
[   44.566577] [drm:edid_is_valid] *ERROR* Raw EDID:                                                                                                                                         
[   44.566590] <3>1f ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................                                                                                                          
[   44.566596] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................                                                                                                          
[   44.566602] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................                                                                                                          
[   44.566608] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................                                                                                                          
[   44.566614] <3>ff ff ff ff ff ff ff ff ff ff ff ff 00 00 00 00  ................                                                                                                          
[   44.566620] <3>00 00 00 07 ff ff ff ff ff ff ff ff ff ff ff ff  ................                                                                                                          
[   44.566626] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................                                                                                                          
[   44.566632] <3>ff ff ff ff ff ff ff ff ff f0 00 00 00 00 00 00  ................                                                                                                          
[   44.566636]                                                                                                                                                                               
[   44.566643] i915 0000:00:02.0: VGA-1: EDID invalid.                                                                                                                                       
[   44.841705] [drm:i915_wait_request] *ERROR* something (likely vbetool) disabled interrupts, re-enabling                                                                                   
[  360.692039] INFO: task i915/1:292 blocked for more than 120 seconds.                                                                                                                      
[  360.692048] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.                                                                                                     
[  360.692055] i915/1        D c08145c0     0   292      2 0x00000000                                                                                                                        
[  360.692065]  f646bf04 00000046 00000000 c08145c0 f6958f28 c08145c0 616ea364 00000026                                                                                                      
[  360.692081]  c08145c0 c08145c0 f6958f28 c08145c0 616e8c81 00000026 c08145c0 f6a5a1c0                                                                                                      
[  360.692095]  f6958c90 f68c9c14 f68c9c18 ffffffff f646bf30 c056f776 f695f110 f68c9c1c                                                                                                      
[  360.692109] Call Trace:                                                                                                                                                                   
[  360.692125]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130                                                                                                                                
[  360.692133]  [<c056f690>] mutex_lock+0x20/0x40                                                                                                                                            
[  360.692183]  [<f8277c0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]                                                                                                                   
[  360.692194]  [<c0157a7e>] run_workqueue+0x6e/0x140                                                                                                                                        
[  360.692233]  [<f8277be0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]                                                                                                                  
[  360.692242]  [<c0157bd8>] worker_thread+0x88/0xe0                                                                                                                                         
[  360.692251]  [<c015c280>] ? autoremove_wake_function+0x0/0x40                                                                                                                             
[  360.692259]  [<c0157b50>] ? worker_thread+0x0/0xe0                                                                                                                                        
[  360.692267]  [<c015bf8c>] kthread+0x7c/0x90                                                                                                                                               
[  360.692274]  [<c015bf10>] ? kthread+0x0/0x90                                                                                                                                              
[  360.692282]  [<c0104007>] kernel_thread_helper+0x7/0x10