driver does not detect VGA monitor, but there is one
Submitted by Benno Schulenberg @benno
Assigned to Openchrome development list
Description
Created attachment 121938 Xorg.0.log with forcibly "detected" output
Version 0.3.3 of the openchrome driver (or the one from git) does not detect any monitor being connected to the VGA port. But it has a TFT monitor connected to it, that apparently does not have an EDID. See below the snippet where it tries to detect the output. Setting the option "ActiveDevice" to "CRT", or "VBEModes" to "True" doesn't help.
Attached is an Xorg.0.log where I have forced the output to being seen as connected, with the attached brute-force patch. Then I get an image on the screen. Things appear to work, but feel more sluggish than with the vesa driver, probably because there is no drm support in the kernel.
[ 22.058] (II) CHROME(0): ViaOutputsDetect [ 22.058] () CHROME(0): Option "PanelSize" "1280x1024" [ 22.058] (==) CHROME(0): LVDS-0 : Digital output bus width is 12 bits. [ 22.058] (==) CHROME(0): LVDS-0 : DVI Center is disabled. [ 22.058] (==) CHROME(0): LVDS Panel will not be forced. [ 22.058] (II) CHROME(0): ViaPanelGetNativeModeFromOption [ 22.058] () CHROME(0): LVDS Panel mode index is 4 [ 22.058] () CHROME(0): Selected Panel Size is 1280x1024 [ 22.058] (II) CHROME(0): Entered via_analog_init. [ 22.059] (II) CHROME(0): Output VGA-1 using monitor section Panel [ 22.059] (II) CHROME(0): Exiting via_analog_init. [ 22.059] (II) CHROME(0): Entered via_tv_init. [ 22.059] (--) CHROME(0): Did not detect a TV encoder. [ 22.059] (II) CHROME(0): Exiting via_tv_init. [ 22.059] (II) CHROME(0): Entered via_dvi_init. [ 22.060] (--) CHROME(0): VT1632A not found on I2C Bus 2 or I2C Bus 3. [ 22.060] (II) CHROME(0): Exiting via_dvi_init. [ 22.060] (II) CHROME(0): I2C device "I2C Bus 1:ddc2" registered at address 0xA0. [ 22.067] (--) CHROME(0): Test for CRT with VSYNC [ 22.067] (II) CHROME(0): EDID for output VGA-1 [ 22.067] (II) CHROME(0): Output VGA-1 disconnected [ 22.067] (WW) CHROME(0): No outputs definitely connected, trying again... [ 22.067] (II) CHROME(0): Output VGA-1 disconnected [ 22.067] (WW) CHROME(0): Unable to find connected outputs - setting 1024x768 initial framebuffer [ 22.067] (II) CHROME(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated. [ 22.067] () CHROME(0): Display dimensions: (375, 300) mm [ 22.067] (**) CHROME(0): DPI set to (69, 65)
Attachment 121938, "Xorg.0.log with forcibly "detected" output":
Xorg.0.log-feb23
Version: git