Dear Florian,
first, I wish everyone a Happy New Year!
Am Montag, den 31.12.2012, 18:22 +0100 schrieb Florian Mickler:
> do you have a quick pointer to your decoded EDID?
yes, everything is in the bug report the patch was supposed to fix [1].
> Maybe we can tell the VW222S and the VW222U apart. Then a small hack
> to the quirk-code should do the trick.
The EDID luckily is different.
$ diff -u asus-vw222s.edid asus-vw222u.edid
--- asus-vw222s.edid 2012-08-15 17:22:32.172213340 +0200
+++ asus-vw222u.edid 2013-01-01 04:33:45.271951086 +0100
@@ -1,8 +1,8 @@
-00ffffffffffff000469a22201010101
-0c1201031e2f1e78eec4f6a3574a9c23
+00ffffffffffff000469a222a6180000
+2e1101031e2f1e78eec4f6a3574a9c23
114f54bfef00714f818081409500a940
b3000101010121399030621a274068b0
3600d9281100001c000000fd00384b1f
5111000a202020202020000000fc0056
573232320a20202020202020000000ff
-0038334c4d51533037393235300a00b3
+0037424c4d51433030363331302000d1
Here the strings output by `edid-decode`.
### VW222S ###
$ ./edid-decode asus-vw222s.edid
[…]
Manufacturer: ACI Model 22a2 Serial Number 16843009
Made week 12 of 2008
EDID version: 1.3
Analog display, Input voltage level: 0.7/0.3 V
Configurable signal levels
Sync: Separate Composite SyncOnGreen
Maximum image size: 47 cm x 30 cm
Gamma: 2.20
DPMS levels: Standby Suspend Off
RGB color display
Default (sRGB) color space is primary color space
First detailed timing is preferred timing
Established timings supported:
720x400@70Hz
640x480@60Hz
640x480@67Hz
640x480@72Hz
640x480@75Hz
800x600@56Hz
800x600@60Hz
800x600@72Hz
800x600@75Hz
832x624@75Hz
1024x768@60Hz
1024x768@70Hz
1024x768@75Hz
1280x1024@75Hz
Standard timings supported:
1152x864@75Hz
1280x1024@60Hz
1280x960@60Hz
1440x900@60Hz
1600x1200@60Hz
1680x1050@60Hz
Detailed mode: Clock 146.250 MHz, 473 mm x 296 mm
1680 1784 1960 2240 hborder 0
1050 1053 1059 1089 vborder 0
-hsync +vsync
Monitor ranges (GTF): 56-75Hz V, 31-81kHz H, max dotclock 170MHz
Monitor name: VW222
Serial number: 83LMQS079250
Checksum: 0xb3 (valid)
### VW222U ###
$ ./edid-decode asus-vw222u.edid
[…]
Manufacturer: ACI Model 22a2 Serial Number 6310
Made week 46 of 2007
EDID version: 1.3
Analog display, Input voltage level: 0.7/0.3 V
Configurable signal levels
Sync: Separate Composite SyncOnGreen
Maximum image size: 47 cm x 30 cm
Gamma: 2.20
DPMS levels: Standby Suspend Off
RGB color display
Default (sRGB) color space is primary color space
First detailed timing is preferred timing
Established timings supported:
720x400@70Hz
640x480@60Hz
640x480@67Hz
640x480@72Hz
640x480@75Hz
800x600@56Hz
800x600@60Hz
800x600@72Hz
800x600@75Hz
832x624@75Hz
1024x768@60Hz
1024x768@70Hz
1024x768@75Hz
1280x1024@75Hz
Standard timings supported:
1152x864@75Hz
1280x1024@60Hz
1280x960@60Hz
1440x900@60Hz
1600x1200@60Hz
1680x1050@60Hz
Detailed mode: Clock 146.250 MHz, 473 mm x 296 mm
1680 1784 1960 2240 hborder 0
1050 1053 1059 1089 vborder 0
-hsync +vsync
Monitor ranges (GTF): 56-75Hz V, 31-81kHz H, max dotclock 170MHz
Monitor name: VW222
Serial number: 7BLMQC006310
Checksum: 0xd1 (valid)
So both advertise the same name and model. :(
> Else, I'm afraid the right thing to do is to revert the quirk.
Yes, the no regression rule.
> I will provide the log files as soon as I'm back with that monitor,
> which should be next year... (Means tomorrow or the day after)
Awesome. When you find out the graphics chip and you are near the
monitor it would be awesome, if you could also connect a to a system
with a different graphics chip so we can get an indication where the
problem might be.
So if nobody has a great idea, the roadmap looks as follows. Revert the
patch, find out why the graphics driver chokes on the reduced blanking
(report a bug) and commit the patch again.
Thanks,
Paul
[1] https://bugs.freedesktop.org/show_bug.cgi?id=17629#c15
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