Re: [PATCH] drm: Add EDID_QUIRK_FORCE_REDUCED_BLANKING for ASUS VW222S

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On Tue, 18 Dec 2012 23:33:20 +0100
Paul Menzel <paulepanter@xxxxxxxxxxxxxxxxxxxxx> wrote:

> Dear Florian,
> 
> 
> Am Dienstag, den 18.12.2012, 21:03 +0100 schrieb Florian Mickler:
> 
> > On Wed, 15 Aug 2012 17:40:40 +0200 Paul Menzel wrote:
> > 
> > > Date: Wed, 8 Aug 2012 23:12:19 +0200
> > > 
> > > Connecting an ASUS VW222S [1] over VGA a garbled screen is shown with
> > > vertical stripes in the top half.
> > 
> > This patch, which was merged in v3.6-rc4, makes the image on my ASUS
> > VW222U ca. 1 inch too wide left/right and top/bottom.  The effect is as
> > if the image was zoomed (bigger, more pixely).
> > 
> > Reverting it fixes the problem.
> 
> I am sorry for the trouble caused by this. As a work around, you could
> also specify the QUIRKS on the Linux command line.
> 
> > The Monitor is connected via VGA, but also has a DVI interface.
> > 
> > Maybe the quirk-apply criteria is too unspecific?
> 
> Hmm, I guess everything is identical but the DVI connector they added to
> the VW222U. Though I should have noticed the effect on the VW222S and
> did not. :(

Hm.. why should you have noticed the effect on the VW222S? Does it
happen there too?

> 
> Could you please send the `edid-decode` output on your system and
> `/var/log/Xorg.0.log`.
> 

I attached the xrandr --verbose output and the 
# get-edid  | parse-edid
output from http://www.polypux.org/projects/read-edid/ which I already
had installed. Hope this works for you too.



> Also I wonder how this quirk could create such a behavior.


Yes. I'm not shure how this could happen. It probably is either a bug
somewhere, or it is the 'natural' effect of misconfiguring the vga
pipeline.  Maybe someone more knowledgeable than me could make a more
educated guess about this.


> 
> [1] http://cgit.freedesktop.org/xorg/app/edid-decode/
Screen 0: minimum 320 x 200, current 3080 x 1050, maximum 8192 x 8192
LVDS1 connected 1400x1050+1680+0 (0x44) normal (normal left inverted right x axis y axis) 304mm x 228mm
	Identifier: 0x41
	Timestamp:  20362
	Subpixel:   horizontal rgb
	Gamma:      1.0:1.0:1.0
	Brightness: 1.0
	Clones:    
	CRTC:       1
	CRTCs:      1
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	EDID:
		00ffffffffffff0030ae424000000000
		000f0103801e1778ea3c809757518a27
		22505421080081800101010101010101
		010101010101302a7820511a10403070
		130030e41000001825237820511a1040
		3070130030e4100000180000000f0090
		4332904328140100320c5321000000fe
		004c503135304530372d544c303300ca
	BACKLIGHT: 15 (0x0000000f)	range:  (0,15)
	Backlight: 15 (0x0000000f)	range:  (0,15)
	scaling mode:	Full aspect
		supported: None         Full         Center       Full aspect 
  1400x1050 (0x44)  108.0MHz -HSync -VSync *current +preferred
        h: width  1400 start 1448 end 1560 total 1688 skew    0 clock   64.0KHz
        v: height 1050 start 1051 end 1054 total 1066           clock   60.0Hz
  1400x1050 (0x45)  122.0MHz +HSync +VSync
        h: width  1400 start 1488 end 1640 total 1880 skew    0 clock   64.9KHz
        v: height 1050 start 1052 end 1064 total 1082           clock   60.0Hz
  1400x1050 (0x46)   90.0MHz -HSync -VSync
        h: width  1400 start 1448 end 1560 total 1688 skew    0 clock   53.3KHz
        v: height 1050 start 1051 end 1054 total 1066           clock   50.0Hz
  1280x1024 (0x47)  108.0MHz +HSync +VSync
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock   64.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   60.0Hz
  1280x960 (0x48)  108.0MHz +HSync +VSync
        h: width  1280 start 1376 end 1488 total 1800 skew    0 clock   60.0KHz
        v: height  960 start  961 end  964 total 1000           clock   60.0Hz
  1024x768 (0x49)   65.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   48.4KHz
        v: height  768 start  771 end  777 total  806           clock   60.0Hz
  800x600 (0x4a)   40.0MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock   37.9KHz
        v: height  600 start  601 end  605 total  628           clock   60.3Hz
  800x600 (0x4b)   36.0MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock   35.2KHz
        v: height  600 start  601 end  603 total  625           clock   56.2Hz
  640x480 (0x4c)   25.2MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz
        v: height  480 start  490 end  492 total  525           clock   60.0Hz
  640x480 (0x4d)   25.2MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz
        v: height  480 start  490 end  492 total  525           clock   59.9Hz
VGA1 connected 1680x1050+0+0 (0x4e) normal (normal left inverted right x axis y axis) 473mm x 296mm
	Identifier: 0x42
	Timestamp:  20362
	Subpixel:   unknown
	Gamma:      1.0:1.0:1.0
	Brightness: 1.0
	Clones:    
	CRTC:       0
	CRTCs:      0 1
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	EDID:
		00ffffffffffff000469a222a6180000
		2e1101031e2f1e78eec4f6a3574a9c23
		114f54bfef00714f818081409500a940
		b3000101010121399030621a274068b0
		3600d9281100001c000000fd00384b1f
		5111000a202020202020000000fc0056
		573232320a20202020202020000000ff
		0037424c4d51433030363331302000d1
  1680x1050 (0x4e)  146.2MHz -HSync +VSync *current +preferred
        h: width  1680 start 1784 end 1960 total 2240 skew    0 clock   65.3KHz
        v: height 1050 start 1053 end 1059 total 1089           clock   60.0Hz
  1600x1200 (0xc7)  162.0MHz +HSync +VSync
        h: width  1600 start 1664 end 1856 total 2160 skew    0 clock   75.0KHz
        v: height 1200 start 1201 end 1204 total 1250           clock   60.0Hz
  1280x1024 (0x4f)  135.0MHz +HSync +VSync
        h: width  1280 start 1296 end 1440 total 1688 skew    0 clock   80.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   75.0Hz
  1280x1024 (0x47)  108.0MHz +HSync +VSync
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock   64.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   60.0Hz
  1440x900 (0x50)  106.5MHz -HSync +VSync
        h: width  1440 start 1520 end 1672 total 1904 skew    0 clock   55.9KHz
        v: height  900 start  903 end  909 total  934           clock   59.9Hz
  1280x960 (0x48)  108.0MHz +HSync +VSync
        h: width  1280 start 1376 end 1488 total 1800 skew    0 clock   60.0KHz
        v: height  960 start  961 end  964 total 1000           clock   60.0Hz
  1152x864 (0x51)  108.0MHz +HSync +VSync
        h: width  1152 start 1216 end 1344 total 1600 skew    0 clock   67.5KHz
        v: height  864 start  865 end  868 total  900           clock   75.0Hz
  1024x768 (0x52)   78.8MHz +HSync +VSync
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock   60.1KHz
        v: height  768 start  769 end  772 total  800           clock   75.1Hz
  1024x768 (0x53)   75.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1328 skew    0 clock   56.5KHz
        v: height  768 start  771 end  777 total  806           clock   70.1Hz
  1024x768 (0x49)   65.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   48.4KHz
        v: height  768 start  771 end  777 total  806           clock   60.0Hz
  832x624 (0x54)   57.3MHz -HSync -VSync
        h: width   832 start  864 end  928 total 1152 skew    0 clock   49.7KHz
        v: height  624 start  625 end  628 total  667           clock   74.6Hz
  800x600 (0x55)   50.0MHz +HSync +VSync
        h: width   800 start  856 end  976 total 1040 skew    0 clock   48.1KHz
        v: height  600 start  637 end  643 total  666           clock   72.2Hz
  800x600 (0x56)   49.5MHz +HSync +VSync
        h: width   800 start  816 end  896 total 1056 skew    0 clock   46.9KHz
        v: height  600 start  601 end  604 total  625           clock   75.0Hz
  800x600 (0x4a)   40.0MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock   37.9KHz
        v: height  600 start  601 end  605 total  628           clock   60.3Hz
  800x600 (0x4b)   36.0MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock   35.2KHz
        v: height  600 start  601 end  603 total  625           clock   56.2Hz
  640x480 (0x57)   31.5MHz -HSync -VSync
        h: width   640 start  664 end  704 total  832 skew    0 clock   37.9KHz
        v: height  480 start  489 end  491 total  520           clock   72.8Hz
  640x480 (0x58)   31.5MHz -HSync -VSync
        h: width   640 start  656 end  720 total  840 skew    0 clock   37.5KHz
        v: height  480 start  481 end  484 total  500           clock   75.0Hz
  640x480 (0x59)   30.2MHz -HSync -VSync
        h: width   640 start  704 end  768 total  864 skew    0 clock   35.0KHz
        v: height  480 start  483 end  486 total  525           clock   66.7Hz
  640x480 (0x4c)   25.2MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz
        v: height  480 start  490 end  492 total  525           clock   60.0Hz
  720x400 (0x5a)   28.3MHz -HSync +VSync
        h: width   720 start  738 end  846 total  900 skew    0 clock   31.5KHz
        v: height  400 start  412 end  414 total  449           clock   70.1Hz
TV1 unknown connection (normal left inverted right x axis y axis)
	Identifier: 0x43
	Timestamp:  20362
	Subpixel:   unknown
	Clones:    
	CRTCs:      0 1
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	bottom margin: 37 (0x00000025)	range:  (0,100)
	right margin: 46 (0x0000002e)	range:  (0,100)
	top margin: 36 (0x00000024)	range:  (0,100)
	left margin: 54 (0x00000036)	range:  (0,100)
	mode:	NTSC-M
		supported: NTSC-M       NTSC-443     NTSC-J       PAL-M       
		           PAL-N        PAL          720p@60Hz    720p@50Hz   
		           1080i@50Hz   1080i@60Hz  
  848x480 (0x5b)   29.0MHz +preferred
        h: width   848 start  849 end  912 total  944 skew    0 clock   30.7KHz
        v: height  480 start  481 end  512 total  513           clock   59.9Hz
  640x480 (0x5c)   22.6MHz +preferred
        h: width   640 start  641 end  704 total  736 skew    0 clock   30.7KHz
        v: height  480 start  481 end  512 total  513           clock   59.9Hz
  1024x768 (0x5d)   53.8MHz
        h: width  1024 start 1025 end 1088 total 1120 skew    0 clock   48.0KHz
        v: height  768 start  769 end  800 total  801           clock   59.9Hz
  800x600 (0x5e)   34.0MHz
        h: width   800 start  801 end  864 total  896 skew    0 clock   37.9KHz
        v: height  600 start  601 end  632 total  633           clock   59.9Hz
	# EDID version 1 revision 3
Section "Monitor"
	# Block type: 2:0 3:fd
	# Block type: 2:0 3:fc
	Identifier "VW222"
	VendorName "ACI"
	ModelName "VW222"
	# Block type: 2:0 3:fd
	HorizSync 31-81
	VertRefresh 56-75
	# Max dot clock (video bandwidth) 170 MHz
	# Block type: 2:0 3:fc
	# Block type: 2:0 3:ff
	# DPMS capabilities: Active off:yes  Suspend:yes  Standby:yes

	Mode 	"1680x1050"	# vfreq 59.954Hz, hfreq 65.290kHz
		DotClock	146.250000
		HTimings	1680 1784 1960 2240
		VTimings	1050 1053 1059 1089
		Flags	"+HSync" "-VSync"
	EndMode
	# Block type: 2:0 3:fd
	# Block type: 2:0 3:fc
	# Block type: 2:0 3:ff
EndSection
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