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* [Bug 30086] New: Nouveau fails with unreadable EDID
@ 2010-09-08 11:55 bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
       [not found] ` <bug-30086-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>
  0 siblings, 1 reply; 27+ messages in thread
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2010-09-08 11:55 UTC (permalink / raw)
  To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW

https://bugs.freedesktop.org/show_bug.cgi?id=30086

           Summary: Nouveau fails with unreadable EDID
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: alci-R1JjGarguu0dnm+yROfE0A@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


On a Sony VPCCW2S1E laptop, EDID seems to be somehow unreadable:

get-edid: get-edid version 2.0.0
 Performing real mode VBE call
 Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
 Function supported
 Call successful

 VBE version 300
 VBE string at 0x11100 "NVIDIA"

VBE/DDC service about to be called
 Report DDC capabilities

 Performing real mode VBE call
 Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
 Function supported
 Call successful

 Monitor and video card combination does not support DDC1 transfers
 Monitor and video card combination does not support DDC2 transfers
 0 seconds per 128 byte EDID block transfer
 Screen is not blanked during DDC transfer

Reading next EDID block

VBE/DDC service about to be called
 Read EDID

 Performing real mode VBE call
 Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
 Function supported
 Call failed

The EDID data should not be trusted as the VBE call failed
Error: output block unchanged


Video card is a GT 330 M:

01:00.0 VGA compatible controller: nVidia Corporation GT216 [GeForce GT 330M]
(rev a2) (prog-if 00 [VGA controller])
    Subsystem: Sony Corporation Device 9072
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Memory at e2000000 (32-bit, non-prefetchable) [size=16M]
    Memory at d0000000 (64-bit, prefetchable) [size=256M]
    Memory at e0000000 (64-bit, prefetchable) [size=32M]
    I/O ports at d000 [size=128]
    Expansion ROM at e3000000 [disabled] [size=512K]
    Capabilities: <access denied>
    Kernel driver in use: nvidia
    Kernel modules: nvidia-current, nouveau, nvidiafb


When loading, nouveau driver can't find the laptop's LCD screen, and display is
black.
Notice that proprietary NVidia driver has the same problem, but it offers a
workaround with the customEDID option:

Option "CustomEDID" "DFP-0:/etc/X11/SNY05FA.bin"


Nouveau does not seem to have such an option... Is there a workaround for
nouveau? Or is there a way to find why the EDID cannot be read?

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^ permalink raw reply	[flat|nested] 27+ messages in thread

end of thread, other threads:[~2011-03-12  5:44 UTC | newest]

Thread overview: 27+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-09-08 11:55 [Bug 30086] New: Nouveau fails with unreadable EDID bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
     [not found] ` <bug-30086-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>
2010-09-08 12:37   ` [Bug 30086] " bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-08 14:25   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-09  9:36   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-09 17:03   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-09 18:53   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-09 21:10   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-09 22:32   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-09 22:40   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13  7:39   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13  7:40   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13  7:41   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13  7:41   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13  7:42   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13  7:42   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13  7:43   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13  7:43   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13 13:15   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13 15:07   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13 15:08   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13 15:09   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-13 22:32   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-14  9:47   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2010-09-14 14:12   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2011-02-10 17:12   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2011-02-24 14:13   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2011-03-12  5:44   ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

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