Ubuntu gives me a blank screen every time I open an app.
This happens when I connect HDMI, two USBs, ethernet and power to my USB-C port (via an adapter).
It does not freeze - I can still hear music.
Checking /var/log/syslog as suggested here I see many screen configuration attempts at the time of said blank screen (see below).
I guess Ubuntu is trying to find the best screen resolution, and it takes a few seconds.
Any suggestions on how to get rid of these annoying freezes?
Output in var/log/syslog:
Oct 18 10:00:30 boom-box systemd[965]: Started Application launched by gnome-shell.
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): EDID vendor "PHL", prod id 2315
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Using hsync ranges from config file
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Using vrefresh ranges from config file
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Printing DDC gathered Modelines:
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1920x1080"x0.0 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1280x720"x0.0 74.25 1280 1390 1430 1650 720 725 730 750 -hsync -vsync (45.0 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1280x720"x0.0 74.25 1280 1390 1430 1650 720 725 730 750 +hsync +vsync (45.0 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1920x1080"x0.0 148.50 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync (56.2 kHz
e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1280x720"x0.0 74.25 1280 1720 1760 1980 720 725 730 750 +hsync +vsync (37.5 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "720x480"x0.0 27.00 720 736 798 858 480 489 495 525 -hsync -vsync (31.5 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "640x480"x0.0 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "800x600"x0.0 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "640x480"x0.0 31.50 640 656 720 840 480 481 484 500 -hsync -vsync (37.5 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "640x480"x0.0 31.50 640 664 704 832 480 489 492 520 -hsync -vsync (37.9 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "640x480"x0.0 30.24 640 704 768 864 480 483 486 525 -hsync -vsync (35.0 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "720x400"x0.0 28.32 720 738 846 900 400 412 414 449 -hsync +vsync (31.5 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1280x1024"x0.0 135.00 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1024x768"x0.0 78.75 1024 1040 1136 1312 768 769 772 800 +hsync +vsync (60.0 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1024x768"x0.0 75.00 1024 1048 1184 1328 768 771 777 806 -hsync -vsync (56.5 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "832x624"x0.0 57.28 832 864 928 1152 624 625 628 667 -hsync -vsync (49.7 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "800x600"x0.0 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync (46.9 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "800x600"x0.0 50.00 800 856 976 1040 600 637 643 666 +hsync +vsync (48.1 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1680x1050"x0.0 119.00 1680 1728 1760 1840 1050 1053 1059 1080 +hsync -vsync (64.7 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1440x900"x0.0 88.75 1440 1488 1520 1600 900 903 909 926 +hsync -vsync (55.5 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1280x1024"x0.0 108.00 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
Oct 18 10:00:31 boom-box /usr/lib/gdm3/gdm-x-session[982]: (II) modeset(0): Modeline "1280x960"x0.0 108.00 1280 1376 1488 1800 960 961 964 1000 +hsync +vsync (60.0 kHz e)
