[Openchrome-devel] [Bug 94277] driver does not detect VGA monitor, but there is one

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94277

Benno Schulenberg <bensberg at justemail.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|NOTABUG                     |---
             Status|RESOLVED                    |REOPENED

--- Comment #13 from Benno Schulenberg <bensberg at justemail.net> ---
It is an openchrome bug.  When I connect the TFT monitor with the very same VGA
cable to my laptop, and boot it, the monitor is somehow detected: it works. 
Below is the essential diff between a boot without and a boot /with/ the TFT
monitor connected.

@@ -97,6 +97,7 @@
 (II) intel(0): Output VIRTUAL1 has no monitor section
 (II) intel(0): Enabled output VIRTUAL1
 (--) intel(0): Output LVDS1 using initial mode 1024x600 on pipe 1
+(--) intel(0): Output VGA1 using initial mode 1024x768 on pipe 0
 (==) intel(0): TearFree disabled
 (==) intel(0): Using gamma correction (1.0, 1.0, 1.0)
 (==) intel(0): DPI set to (96, 96)
@@ -136,9 +137,10 @@
 (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
 (II) AIGLX: Loaded and initialized i915
 (II) GLX: Initialized DRI2 GL provider for screen 0
+(II) intel(0): switch to mode 1024x768 at 60.0 on VGA1 using pipe 0, position (0,
0), rotation normal, reflection none
 (II) intel(0): switch to mode 1024x600 at 60.0 on LVDS1 using pipe 1, position
(0, 0), rotation normal, reflection none
-(II) intel(0): Setting screen physical size to 270 x 158
+(II) intel(0): Setting screen physical size to 270 x 203
 (**) Power Button: Applying InputClass "evdev keyboard catchall"
 (**) Power Button: Applying InputClass "libinput keyboard catchall"
 (**) Power Button: Applying InputClass "system-keyboard"

So my laptop is able to "see" the monitor, or at least: it sees that something
is connected to its VGA output connector.  Now, it may be that the hardware of
my openchrome box is somehow deficient or partially broken (although that is
quite unlikely, as you said), but that shouldn't matter at all.  If the driver
would just default to enabling VGA output when it cannot detect *anything*,
then this problem would be solved.

Modern hardware should be detectable, sure.  But old hardware...  Better be
lenient and forgiving and provide a sane default: enable VGA when unable to
detect any screen.

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