The model I've tested is Panasonic, CF-SX3, related lines from dmesg:
[ 1.041396] i915drmkms0 at pci0 dev 2 function 0: Intel HD Graphics (GT2) (rev. 0x0b)
[ 3.103214] i915drmkms0: interrupting at msi6 vec 0 (i915drmkms0)
[ 3.152610] intelfb0 at i915drmkms0
This note PC has been needed some patch to use built-in LCD.
I've been using a patch from sloss (toughbook version)
Then, I have three type of kernels tested:
- No change (-current)
9.0 - 9.99.x
-> Internal LCD was OK for a while after boot, but black out after drmkms activated
-> external HDMI/VGA works. If external HDMI connected, internal also LCD works
(and small font appears at console of both display, meaning not intelfb mode)
- 2. local (adhoc and almost debug print) patch (9.99.91 at the moment)
-> Internal LCD and external HDMI both works
xrandr output is:
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SX3@makoto 22:16:17/211030(~)% xrandr
Screen 0: minimum 8 x 8, current 2680 x 1920, maximum 32767 x 32767
eDP1 connected primary 1600x900+1080+0 (normal left inverted right x axis y axis) 260mm x 150mm
1600x900 59.98*+ 59.82
1400x900 59.88
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
800x450 60.00
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1080x1920+0+0 left (normal left inverted right x axis y axis) 510mm x 290mm
1920x1080 60.00*+ 50.00 59.94
1920x1080i 60.00 50.00 59.94
1680x1050 59.88
1280x1024 60.02
1280x960 60.00
1152x864 59.97
1280x720 60.00 50.00 59.94
1024x768 60.00
800x600 60.32
720x576 50.00
720x480 60.00 59.94
640x480 60.00 59.94
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
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3. rereredrm56 (9.99.88 at the mement)
-> external VGA works fine but,
-> external HDMI won't come out. xrandr shows following lines:
----------
SX3@makoto 21:09:39/211030(~)% xrandr
Screen 0: minimum 8 x 8, current 1600 x 900, maximum 32767 x 32767
eDP1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 260mm x 150mm
1600x900 59.98*+ 59.82
1400x900 59.88
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
800x450 60.00
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
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