So I can confirm that adding the extra modeline works, eg I now have
2560x1440@60 Hz both appearing in xrandr and working on the laptop
monitor using the modeset driver.
(There's a separate bug for the modeset driver whereby if you change the
mode, eg from 1920x1080 to 2560x1440, the new screen on
Ah, ok. So add a new patch that adds your mode to extramodes? But sounds
like you've never heard of quilt either..
core and common are all you need
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Ok, thanks for the info re dpkg-buildpackage.
xf86DefModeSet.c is created by hw/xfree86/common/modeline2c.awk. If you
run dpkg-buildpackage, you'll find it two places:
$ find -name xf86DefModeSet.c
./build-main/hw/xfree86/common/xf86DefModeSet.c
./build-udeb/hw/xfree86/common/xf86DefModeSet.c
xf
That makes no sense, there is no xf86DefModeSet.c, nor can I find
xf86DefaultModes array.
You need to build the server with dpkg-buildpackage, not manually with
'make build'.
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>From https://bugs.freedesktop.org/show_bug.cgi?id=97163#c15, I think
it's just a matter of some modelines missing from the xf86DefaultModes
array in xf86DefModeSet.c, eg I suspect that adding this:
/* 2560x1440 59.96 Hz (CVT 3.69M9) hsync: 89.52 kHz; pclk: 312.25 MHz */
{MODEPREFIX, 31225
** Summary changed:
- modeset driver is missing some modes that the intel driver had
+ modeset driver is missing some modes that the intel driver (and Mir) has
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