[Bug 31943] drm EDID checking is too strict

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Jan 10 11:16:29 PST 2011


--- Comment #9 from Thomas Drillich <th at drillich.com> 2011-01-10 11:16:29 PST ---

patch of comment #6 helped me, when using kernel 2.6.37.
Before patch monitor at hdmi port stays black,
cause of:
 [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 254

But is that patch the solution for the bug ?

gpu: ATI RS880 [Radeon HD 4200] rev 0 (ChipID = 0x9710)
VGA: Philips 180P2
(II) RADEON(0): EDID (in hex):
(II) RADEON(0):     00ffffffffffff00410c080835110000
(II) RADEON(0):     1f0c01030f241d78ea0925a2574b9724
(II) RADEON(0):     185054bfef80314f454f614f81800101
(II) RADEON(0):     010101010101302a009851002a403070
(II) RADEON(0):     1300671f1100001e000000ff00204844
(II) RADEON(0):     20203030343430350a20000000fc0050
(II) RADEON(0):     68696c697073203138305032000000fd
(II) RADEON(0):     00384c1e520e000a202020202020006e

HDMI: iiyama PLB2403WS
(II) RADEON(0): EDID (in hex):
(II) RADEON(0):     7f7f7f7f7f7f7f7f26cd0156fdc40000
(II) RADEON(0):     3111010380342178ea5ad5a7564b9b24
(II) RADEON(0):     135054bdef80714f81908180818ca940
(II) RADEON(0):     b300950f9500283c80a070b023403020
(II) RADEON(0):     360007442100001a000000ff00303537
(II) RADEON(0):     34323730313130303031000000fd0038
(II) RADEON(0):     4c1e5311000a202020202020000000fc
(II) RADEON(0):     00504c423234303357530a202020018e

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