[Openchrome-devel] [Bug 106392] blank screen on OpenChrome with VIA VE900

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106392

--- Comment #6 from ptouchman at gmail.com ---
Ok I don't think it's the DDC, because I tried an old Dell Ultrascan P991 CRT
monitor and got the same blank results.

One thing I did notice with the old CRT was a brief flash of color which looked
like what should be displaying but super skewed.  It must be displaying at a
frequency that the monitor can't handle and it put up a message saying "out of
range" just like my LCD monitor did.


I thought I'd try to use the via_reg_tool to see what it said:

"sudo ./via_reg_tool -m"  while  the console text is active said:

via-chrome-tool (C) 2009 by VIA Technologies, Inc.
This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY

SL in System memory: 0x10000000, RTSF in SL: 0x0
Primary Display:
    H total=800, active=640, blank (640-544), sync(656-240)
    V total=525, active=480, blank (480-13), sync(489-11)
base_addr=0x00003250, bpp=8

Secondary Display:
    H total=246, active=246, blank (1534-7928), sync(4085-509)
    V total=1534, active=1982, blank (2038-2038), sync(2045-23)
base_addr=0x00000000, bpp=8

Panel Scaling enabled, mode Interpolation
Scaling Factors: horizontal=0, vertical=1707

LVDS Seq Mode: LVDS1 + LVDS2
LVDS CRT Mode: LVDS1 + LVDS2
LVDS Channel 1 Format OpenLDI, Power Down
LVDS Channel 2 Format OpenLDI, Power Down



and if I wanted to see what the graphics mode would be I tried:

"sleep 5; sudo ./via_reg_tool -m"  and then hit CTRL+ALT+F7 to get into the
graphics mode:

via-chrome-tool (C) 2009 by VIA Technologies, Inc.
This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY

SL in System memory: 0x10000000, RTSF in SL: 0x0
Primary Display:
    H total=1376, active=1024, blank (1032-96), sync(1072-136)
    V total=808, active=768, blank (769-40), sync(769-3)
base_addr=0x04000000, bpp=32

Secondary Display:
    H total=246, active=246, blank (1534-7928), sync(4085-509)
    V total=1534, active=1982, blank (2038-2038), sync(2045-23)
base_addr=0x00000000, bpp=8

Panel Scaling enabled, mode Interpolation
Scaling Factors: horizontal=0, vertical=1707

LVDS Seq Mode: LVDS1 + LVDS2
LVDS CRT Mode: LVDS1 + LVDS2
LVDS Channel 1 Format OpenLDI, Power Down
LVDS Channel 2 Format OpenLDI, Power Down


I also tried the -p option while I was in console mode (I forgot to try it in
graphics mode with a sleep command).


via-chrome-tool (C) 2009 by VIA Technologies, Inc.
This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY

VCK PLL: dm=653, dtx=2, dr=2, dn=2 VCK Fvco=2344572 kHz, Fout=586143 kHz
ECK PLL: dm=596, dtx=2, dr=0, dn=1 ECK Fvco=2854054 kHz, Fout=0 kHz
LDCK PLL: dm=596, dtx=2, dr=2, dn=1 LDCK Fvco=2854054 kHz, Fout=713513 kHz

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