Hi, I've installed a Pi 5 with Raspbian OS Lite, and then added the XFCE4 packages. Booting to a text console, after startxfce4(1), the desktop appears and works fine, but ~/.local/share/xorg/Xorg.0.log grows rapidly due to just these lines being repeatedly added:
(Wayland, using ‘startxfce4 --wayland’, isn't suitable as it needs quite a bit more polish.)
The file grows so quickly it isn't practical to keep the desktop running. How often these lines are logged varies. Here's a sample of the number of times per second.
The hardware is Pi 5 → Amazon Basics HDMI cable → HDMI to DVI-I converter → DVI-I connector on BenQ monitor.
The Pi 5 has replaced a x86_64 PC with Nvidia GPU running ArchLinux, XFCE4, and Xorg. The log file didn't grow with the PC; I've switched back and confirmed it still doesn't.
DDC's details on the monitor: model BenQG2222HDL, product-code 30810. EDID is:
I'm aware of the similar thread 'Pi5, updated Raspi OS Lite + XFCE : Xorg log getting filled', viewtopic.php?p=2305851 , but the vc4.force_hotplug=1 suggestion changed nothing.
Thanks, Ralph.
(Wayland, using ‘startxfce4 --wayland’, isn't suitable as it needs quite a bit more polish.)
Code:
[ 167.866] (II) modeset(0): EDID vendor "BNQ", prod id 30810[ 167.866] (II) modeset(0): Using hsync ranges from config file[ 167.866] (II) modeset(0): Using vrefresh ranges from config file[ 167.866] (II) modeset(0): Printing DDC gathered Modelines:[ 167.866] (II) modeset(0): Modeline "1920x1080"x0.0 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)[ 167.866] (II) modeset(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz e)[ 167.866] (II) modeset(0): Modeline "800x600"x0.0 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz e)[ 167.866] (II) modeset(0): Modeline "640x480"x0.0 31.50 640 656 720 840 480 481 484 500 -hsync -vsync (37.5 kHz e)[ 167.866] (II) modeset(0): Modeline "640x480"x0.0 31.50 640 664 704 832 480 489 492 520 -hsync -vsync (37.9 kHz e)[ 167.866] (II) modeset(0): Modeline "640x480"x0.0 30.24 640 704 768 864 480 483 486 525 -hsync -vsync (35.0 kHz e)[ 167.866] (II) modeset(0): Modeline "640x480"x0.0 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz e)[ 167.866] (II) modeset(0): Modeline "720x400"x0.0 28.32 720 738 846 900 400 412 414 449 -hsync +vsync (31.5 kHz e)[ 167.866] (II) modeset(0): Modeline "1280x1024"x0.0 135.00 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)[ 167.866] (II) modeset(0): Modeline "1024x768"x0.0 78.75 1024 1040 1136 1312 768 769 772 800 +hsync +vsync (60.0 kHz e)[ 167.866] (II) modeset(0): Modeline "1024x768"x0.0 75.00 1024 1048 1184 1328 768 771 777 806 -hsync -vsync (56.5 kHz e)[ 167.866] (II) modeset(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz e)[ 167.866] (II) modeset(0): Modeline "832x624"x0.0 57.28 832 864 928 1152 624 625 628 667 -hsync -vsync (49.7 kHz e)[ 167.866] (II) modeset(0): Modeline "800x600"x0.0 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync (46.9 kHz e)[ 167.866] (II) modeset(0): Modeline "800x600"x0.0 50.00 800 856 976 1040 600 637 643 666 +hsync +vsync (48.1 kHz e)[ 167.866] (II) modeset(0): Modeline "1152x864"x0.0 108.00 1152 1216 1344 1600 864 865 868 900 +hsync +vsync (67.5 kHz e)[ 167.866] (II) modeset(0): Modeline "1152x720"x60.0 67.32 1152 1208 1328 1504 720 721 724 746 -hsync +vsync (44.8 kHz e)[ 167.866] (II) modeset(0): Modeline "1280x720"x60.0 74.48 1280 1336 1472 1664 720 721 724 746 -hsync +vsync (44.8 kHz e)[ 167.866] (II) modeset(0): Modeline "1280x800"x0.0 71.00 1280 1328 1360 1440 800 803 809 823 +hsync -vsync (49.3 kHz e)[ 167.866] (II) modeset(0): Modeline "1280x960"x0.0 108.00 1280 1376 1488 1800 960 961 964 1000 +hsync +vsync (60.0 kHz e)[ 167.866] (II) modeset(0): Modeline "1440x900"x0.0 88.75 1440 1488 1520 1600 900 903 909 926 +hsync -vsync (55.5 kHz e)[ 167.866] (II) modeset(0): Modeline "1440x900"x0.0 136.75 1440 1536 1688 1936 900 903 909 942 -hsync +vsync (70.6 kHz e)[ 167.867] (II) modeset(0): Modeline "1680x1050"x0.0 119.00 1680 1728 1760 1840 1050 1053 1059 1080 +hsync -vsync (64.7 kHz e)Code:
12 8 15 26 23 25 25 25 24 25 24 5 4 5 5 5 4 5 6 22 15 9 9 4 9 8 4 10 98 12 6 5 4 5 5 4 12 13 9 8 9 5 5 4 12 10 7 9 5 4 5 5 5 10 12 8 5 5 5 7The Pi 5 has replaced a x86_64 PC with Nvidia GPU running ArchLinux, XFCE4, and Xorg. The log file didn't grow with the PC; I've switched back and confirmed it still doesn't.
DDC's details on the monitor: model BenQG2222HDL, product-code 30810. EDID is:
Code:
00ffffffffffff0009d15a78455400003114010380301b782ee615a655499927135054bfef807100714f81c0810081409500950fb300023a801871382d40582c4500de0d1100001e000000ff0041434130313634313032360a20000000fd00324c185315000a202020202020000000fc0042656e51473232323248444c0a001c- Where is vc4.force_hotplug documented?
- Is there a way of monitoring what events the VCⅦ is seeing to confirm it's an incoming hardware issue
making it think the monitor is being repeatedly hotplugged? - I'd welcome other suggestions to debug the issue.
Thanks, Ralph.
Statistics: Posted by Ralph Corderoy — Tue Oct 28, 2025 2:52 pm