Hi,
My TBS6504 card does seem to have a problem with DiSEqC 1.0 (linux ubuntu 20.04). I am using this guide for driver installation https://github.com/tbsdtv/linux_media/wiki
Have tried several different brand DiSEqC 1.0 switches but it does not help.
I have also a TBS6903 and TBS6908 that works well with my DiSEqC 1.0 switches but I would really like to use DiSEqC in TBS6504.
Did use dvblast and tsduck to test DiSEqC switching but still no success with TBS6504.
Any suggestions for solutions would be appriciated.