[Bug 98149] EDID doesn't detect resolution 1440x900 correctly NV34 FX5200Go - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 98149] EDID doesn't detect resolution 1440x900 correctly NV34 FX5200Go
Date: Sat, 08 Oct 2016 00:46:11 +0000	[thread overview]
Message-ID: <bug-98149-8800-yKNSHBRRQj@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-98149-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>

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https://bugs.freedesktop.org/show_bug.cgi?id=98149

--- Comment #2 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Looks like the included EDID in the VBIOS is:

00000000  00 ff ff ff ff ff ff 00  2e 0d 00 00 00 00 00 00  |................|
00000010  04 09 01 02 80 00 00 00  e2 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 08 00 01 01  01 01 01 01 01 01 01 01  |................|
00000030  01 01 01 01 01 01 64 19  00 40 41 00 26 30 18 88  |......d..@A.&0..|
00000040  36 00 00 00 00 00 00 18  00 00 00 00 00 00 00 00  |6...............|
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 ff  |................|

Which decodes to

Checksum Correct

Section "Monitor"
        Identifier ""
        ModelName ""
        VendorName "KPM"
        # Monitor Manufactured week 4 of 1999
        # EDID version 1.2
        # Digital Display
        # Display Physical Size not given. Normal for projectors.
        Gamma 1.00
        Option "DPMS" "true"
        Modeline        "Mode 0" -hsync -vsync 
EndSection

Which is obviously crap - no modelines are given, that's why we pick the
default 1024x768 & co modelines. Investigating further about how this used to
work. (Also manufactured in early 1999 seems surprising given that this is a
probably 2004 or so laptop...) But the checksum checks out, so we happily use
it.

Would you be so kind as include a dmesg with drm.debug=0x1e nouveau.debug=debug
from a working kernel?

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