On 11/22/2012 02:28 PM, Xavier Bachelot wrote: > Hi Harry, > > On 11/22/2012 02:01 PM, Harry de Boer wrote: >> Hi, >> >> I recently upgraded my Via machine to the latest Ubuntu and I couldn't >> get my tv-output to work again. Last night I decided to dive into the >> code a bit. The first thing I noticed was that vt1625 output sensing >> seemed broken. Attached is a patch that should fix that. >> >> I haven't got it working again yet so there's more to be done. If there >> is anything I should know before continuing or have any tips please let >> me know. >> > Thanks for the patch. There's someone with issue with the TV out on an > EX board on the -users mailing list and he has trouble with probing the > TV out too, so it comes right to the point ;-) I've applied Harry's patch and it now correctly senses the TV-Out, so good work Harry! The Xorg.0.log looks like: | ||...|| ||[ 88186.913] (II) CHROME(0): ViaOutputsDetect|| ||[ 88186.913] (==) CHROME(0): LVDS-0 : Digital output bus width is 12 bits.|| ||[ 88186.913] (==) CHROME(0): LVDS-0 : DVI Center is disabled.|| ||[ 88186.913] (==) CHROME(0): LVDS Panel will not be forced.|| ||[ 88186.913] (==) CHROME(0): Panel size is not selected from config file.|| ||[ 88186.913] (II) CHROME(0): Output VGA-1 using monitor section Monitor0|| ||[ 88186.914] (II) CHROME(0): ViaVT162xDetect|| ||[ 88186.914] (II) CHROME(0): I2C device "I2C bus 2:VT162x" registered at address 0x40.|| ||[ 88186.915] (--) CHROME(0): Detected VIA Technologies VT1625 TV Encoder|| <---- do we have a VT1625? ||[ 88186.915] (II) CHROME(0): ViaVT162xInit|| ||[ 88186.915] (II) CHROME(0): Output TV-1 has no monitor section|| ||[ 88186.915] (II) CHROME(0): VT162xSave|| ||[ 88187.015] (II) CHROME(0): I2C device "I2C bus 1:ddc2" registered at address 0xA0.|| ||[ 88187.022] (--) CHROME(0): Test for CRT with VSYNC|| ||[ 88187.023] (II) CHROME(0): EDID for output VGA-1|| ||[ 88187.023] (II) CHROME(0): Printing probed modes for output TV-1|| ||[ 88187.023] (II) CHROME(0): Modeline "640x480"x63.8 30.00 640 688 744 784 480 488 495 600 -hsync -vsync (38.3 kHz UdP)|| ||[ 88187.023] (II) CHROME(0): Output VGA-1 disconnected|| ||[ 88187.023] (II) CHROME(0): Output TV-1 connected ||<---- RESULT!|| ||[ 88187.023] (II) CHROME(0): Using user preference for initial modes|| ||[ 88187.023] (II) CHROME(0): Output TV-1 using initial mode 640x480|| ||[ 88187.023] (II) CHROME(0): VIAFreeScreen|| ||[ 88187.023] (II) CHROME(0): VIAUnmapMem|| ||[ 88187.026] (II) CHROME(0): VIAFreeRec|| ||[ 88187.026] (II) CHROME(0): I2C device "I2C bus 2:VT1625" removed.|
But, alike my (feeble) attempt when I just forced the TV-Out to state connected, this is where the log ends and X just disappears. > > There are 2 variant of the VT1625 (VT1625 and VT1625S) out in the wild > and it seems there are subtle differences between them. One of the > difference is one has 4 DACs and the other has 6. They are sharing the > same idea so I don't know of a good way to tell one from the other. > Fortunately, there are datasheets available for both, it might help you > get the TV out working. > See http://www.openchrome.org/trac/wiki/Development#TVencoders > > Out of curiosity, I do have an EX board too (for testing purpose) and > mine is using a VT1625S. What's the flavor on yours ? >From the log I tend to think mine is a VT1625, no "S". But I might be mistaken? One more thing I noticed in the log: |...|| ||[ 88186.912] (**) CHROME(0): TV Type is PAL.|| ||[ 88186.912] (**) CHROME(0): TV Output Signal is S-Video.|| ||[ 88186.912] (==) CHROME(0): No default TV output port is set.|| <--- so? ||...| Could this be an issue? And if so, how to fix this? I have set the BIOS to use TV only and only enabled the S-Video output. Finally, my xorg conf says: | ||Section "Monitor"|| || Identifier "Monitor0"|| || HorizSync 30 - 50|| || VertRefresh 50.0 - 50.0|| ||EndSection|| || ||Section "Device"|| || Identifier "Device0"|| || Driver "openchrome"|| || Option "ActiveDevice" "TV"|| || Option "TVType" "PAL"|| || Option "TVOutput" "S-Video"|| ||EndSection|| || ||Section "Screen"|| || Identifier "Screen0"|| || Device "Device0"|| || Monitor "Monitor0"|| || SubSection "Display"|| || Viewport 0 0|| || Modes "720x576" "720x576Noscale"|| || EndSubSection|| ||EndSection| Yet, the X log, as you can see above, says: | ||[ 88186.915] (II) CHROME(0): Output TV-1 has no monitor section|| | But it does... And: |[ 88994.747] (II) CHROME(0): Output TV-1 using initial mode 640x480| Which should be 720x576, the PAL mode, as indicated in the conf. Hope this helps. If there is anything more I can test, please let me know! Regards, Willem
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