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Back to 4.4.38 because flickering eventually led to a complete freeze.
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Touch seeded packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1638565
Title:
HP Envy 34c resolution maxes out at
I'm on the 4.9 kernel today with the following .xprofile. Much less
flicker but it still comes up every once in a while.
xrandr --newmode "3440x1440" 196.25 3440 3600 3952 4464 1440 1443 1453 1468
+hsync -vsync
xrandr --addmode HDMI-1 "3440x1440"
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And now on 4.8.0-27-generic #29-Ubuntu SMP Thu Oct 20 21:03:13 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux:
/sys/class/drm/card0-eDP-1/modes:3200x1800
/sys/class/drm/card0-HDMI-A-1/modes:1920x1200
/sys/class/drm/card0-HDMI-A-1/modes:1920x1080
/sys/class/drm/card0-HDMI-A-1/modes:1920x1080
Weird yes! Thanks for the feedback though. I'm on the 4.4 kernel now
and wanted to report this which is perfect. I'll switch back to the
stock linux-generic in a bit to run the same and post the output here if
that helps.
luis@juno:~/Code/balsamiq/cloud$ grep . /sys/class/drm/*/modes
Yep, Xorg.log seems to suggest the HDMI port is on the Intel output. So
possibly a duplicate of bug 1606103. Although I would not have expected
going back to kernel 4.4 would help (!?).
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Since your system has hybrid graphics (both Intel and Nvidia GPUs) it's
unclear which monitor connectors are connected to which GPU. The answer
varies between laptop models...
If we assume the answer is that your HDMI port is connected to the Intel
GPU (which would be pretty normal) then this is
The only way to get a workable system is to move back to a 4.4 kernel. I
tried that before and still experienced some issues but trying this
latest 4.4 build.
Linux juno 4.4.30-040430-generic #201611010007 SMP Tue Nov 1 04:08:50
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
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