FvwmErrorHandler: *** internal error *** invalid Pixmap parameter

Configuration
1

I have a FvwmScript that crashes with this error:

[1753944586.453422] FvwmErrorHandler: *** internal error ***
[1753944586.453486] FvwmErrorHandler: Request 56, Error 4, Text BadPixmap (invalid Pixmap parameter), EventType: 20

2

You should provide your script so we can see what the invalid parameter you are using is.

3

I think it’s SVG related as the error is always after loading SVG in the log:

[1753944585.949400] PImageLoadSvg: FINAL: DIM.EM: 32.000000, DIM.EX: 32.000000
[1753944585.949465] PImageLoadSvg: SIZE: 4096
[1753944585.953090] PImageLoadSvg: FINAL: DIM.EM: 32.000000, DIM.EX: 32.000000
[1753944585.953155] PImageLoadSvg: SIZE: 4096
[1753944586.453422] FvwmErrorHandler: *** internal error ***
[1753944586.453486] FvwmErrorHandler: Request 56, Error 4, Text BadPixmap (invalid Pixmap parameter), EventType: 20

4

The *** internal error *** means an error is coming from Xorg, and the message is coming from XGetErrorText, so it could be the pixmap xorg is getting is missing a parameter, but you should still share the script so we can see if there is some error in the config syntax causing this.

5

This happens only when I restart Fvwm and at least one application is running.
Eg: urxvt

urxvt: An X Error occurred, trying to continue after report.
urxvt: + Serial number of failed request: 616
urxvt: + X Error of failed request: BadDrawable (invalid Pixmap or Window parameter)
urxvt: + Major opcode of failed request: 14
urxvt: + (which is X_GetGeometry)
urxvt: + Resource id in failed request: 0x800003
urxvt: Can’t call method “clone” on an undefined value at /usr/lib64/urxvt/perl/background line 781.
X Error of failed request: BadGC (invalid GC parameter)
Major opcode of failed request: 70 (X_PolyFillRectangle)
Resource id in failed request: 0x40074f
Serial number of failed request: 9261
Current serial number in output stream: 9271
XIO: fatal IO error 4 (Interrupted system call) on X server “:0”
after 701 requests (701 known processed) with 1 events remaining.
urxvt: X connection to ‘:0’ broken, unable to recover, exiting.
XIO: fatal IO error 4 (Interrupted system call) on X server “:0”
after 497 requests (497 known processed) with 1 events remaining.
XIO: fatal IO error 4 (Interrupted system call) on X server “:0”
after 639 requests (639 known processed) with 0 events remaining.
XIO: fatal IO error 4 (Interrupted system call) on X server “:0”
after 1115 requests (1115 known processed) with 1 events remaining.