[Openchrome-devel] [Bug 96500] New: Can't use 1920x1080 on VGA with versions newer than 0.4.176

Sun Jun 12 20:17:52 UTC 2016

https://bugs.freedesktop.org/show_bug.cgi?id=96500

            Bug ID: 96500
           Summary: Can't use 1920x1080 on VGA with versions newer than
                    0.4.176
           Product: xorg
           Version: git
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/openchrome
          Assignee: openchrome-devel at lists.freedesktop.org
          Reporter: off_mail at mail.ru

Created attachment 124489
  --> https://bugs.freedesktop.org/attachment.cgi?id=124489&action=edit
Xorg.0.log for 0.4.179 driver (with problem)

After commit "Limiting IGA1 horizontal total to 2080"
https://cgit.freedesktop.org/openchrome/xf86-video-openchrome/commit/?id=c768c86d044c84504f2b747db2b306c1f041ba44
driver don't like video mode it worked with before.

I have a motherboard Asus P5VD2-MX SE with P4P890 and integrated VGA output.
Lubuntu 16.04. Dell S2740L FullHD monitor connected to VGA output. Video mode
selected in OS: 1920x1080.

With previous version of driver (exactly 0.4.171) i got following logs:

[    15.306] (II) CHROME(0): Entered viaIGA1ModeValid.
[    15.306] (II) CHROME(0): Exiting viaIGA1ModeValid.
...
[    15.306] (II) CHROME(0): IGA1 Requested Screen Mode: 1920x1080
[    15.306] (II) CHROME(0): IGA1 CrtcHTotal: 2200
[    15.306] (II) CHROME(0): IGA1 CrtcHDisplay: 1920
[    15.306] (II) CHROME(0): IGA1 CrtcHBlankStart: 1920
[    15.306] (II) CHROME(0): IGA1 CrtcHBlankEnd: 2200
[    15.306] (II) CHROME(0): IGA1 CrtcHSyncStart: 2008
[    15.306] (II) CHROME(0): IGA1 CrtcHSyncEnd: 2052
[    15.306] (II) CHROME(0): IGA1 CrtcVTotal: 1125
[    15.306] (II) CHROME(0): IGA1 CrtcVDisplay: 1080
[    15.306] (II) CHROME(0): IGA1 CrtcVBlankStart: 1080
[    15.306] (II) CHROME(0): IGA1 CrtcVBlankEnd: 1125
[    15.306] (II) CHROME(0): IGA1 CrtcVSyncStart: 1084
[    15.306] (II) CHROME(0): IGA1 CrtcVSyncEnd: 1089
[    15.306] (II) CHROME(0): Exiting viaIGA1SetDisplayRegister.

But with this patch (and exactly version 0.4.179) value 2200 is out of range
and i got following message:

[    20.048] (II) CHROME(0): Entered viaIGA1ModeValid.
[    20.048] (II) CHROME(0): Not using mode "(null)" : horizontal timing out of
range.

I tracked the source of this value (2200) and it probably came from monitor:

[    20.045] (--) CHROME(0): Detected a VGA monitor on I2C Bus 1.
[    20.045] (II) CHROME(0): EDID vendor "DEL", prod id 41100
[    20.045] (II) CHROME(0): Printing probed modes for output VGA-1
[    20.045] (II) CHROME(0): Modeline "1920x1080"x60.0  148.50  1920 2008 2052
2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)
[    20.045] (II) CHROME(0): Modeline "1920x1080"x60.0  172.80  1920 2040 2248
2576  1080 1081 1084 1118 -hsync +vsync (67.1 kHz e)
[    20.045] (II) CHROME(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440
1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
[    20.045] (II) CHROME(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440
1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
[    20.045] (II) CHROME(0): Modeline "1152x864"x75.0  108.00  1152 1216 1344
1600  864 865 868 900 +hsync +vsync (67.5 kHz e)
[    20.045] (II) CHROME(0): Modeline "1024x768"x75.0   78.75  1024 1040 1136
1312  768 769 772 800 +hsync +vsync (60.0 kHz e)
[    20.045] (II) CHROME(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184
1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
[    20.045] (II) CHROME(0): Modeline "800x600"x75.0   49.50  800 816 896 1056 
600 601 604 625 +hsync +vsync (46.9 kHz e)
[    20.045] (II) CHROME(0): Modeline "800x600"x60.3   40.00  800 840 968 1056 
600 601 605 628 +hsync +vsync (37.9 kHz e)
[    20.045] (II) CHROME(0): Modeline "640x480"x75.0   31.50  640 656 720 840 
480 481 484 500 -hsync -vsync (37.5 kHz e)
[    20.045] (II) CHROME(0): Modeline "640x480"x59.9   25.18  640 656 752 800 
480 490 492 525 -hsync -vsync (31.5 kHz e)
[    20.045] (II) CHROME(0): Modeline "720x400"x70.1   28.32  720 738 846 900 
400 412 414 449 -hsync +vsync (31.5 kHz e)
[    20.045] (II) CHROME(0): Output VGA-1 connected
[    20.045] (II) CHROME(0): Using exact sizes for initial modes
[    20.045] (II) CHROME(0): Output VGA-1 using initial mode 1920x1080 +0+0

Attached bad (0.4.179) and good (0.4.171) Xorg.0.log files

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