Stimmt anscheinend. Habe das Skript noch einmal um User Kontext ausgeführt, da trat die Meldung dann nicht mehr auf und die Module wurden installiert. Nur leider funktioniert es trotzdem nicht 
Aug 12 08:51:57 htpc kernel: stv090x_read_reg: Read error, Reg=[0xf3ac], Status=-5
Aug 12 08:51:57 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x68, len=2, flags=0x0
Aug 12 08:51:57 htpc kernel: stv090x_read_reg: Read error, Reg=[0xf59f], Status=-5
Aug 12 08:51:58 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x68, len=3, flags=0x0
Aug 12 08:51:58 htpc kernel: stv090x_write_regs: Reg=[0xf3a8], Data=[0x00 ...], Count=1, Status=-5
Aug 12 08:51:58 htpc kernel: stv090x_read_per: I/O error
Aug 12 08:51:58 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x68, len=2, flags=0x0
Aug 12 08:51:58 htpc kernel: stv090x_read_reg: Read error, Reg=[0xf5a8], Status=-5
Aug 12 08:51:58 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x60, len=9, flags=0x0
Aug 12 08:51:58 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x68, len=2, flags=0x0
Aug 12 08:51:58 htpc kernel: stv090x_read_reg: Read error, Reg=[0xf5a9], Status=-5
Aug 12 08:51:58 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x68, len=2, flags=0x0
Aug 12 08:51:58 htpc kernel: stv090x_read_reg: Read error, Reg=[0xf5aa], Status=-5
Aug 12 08:51:58 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x68, len=2, flags=0x0
Aug 12 08:51:58 htpc kernel: stv090x_read_reg: Read error, Reg=[0xf5ab], Status=-5
Aug 12 08:51:58 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x68, len=2, flags=0x0
Aug 12 08:51:58 htpc kernel: stv090x_read_reg: Read error, Reg=[0xf5ac], Status=-5
Aug 12 08:51:59 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x68, len=3, flags=0x0
Aug 12 08:51:59 htpc kernel: stv090x_write_regs: Reg=[0xf5a8], Data=[0x00 ...], Count=1, Status=-5
Aug 12 08:51:59 htpc kernel: stv090x_read_per: I/O error
Aug 12 08:51:59 htpc kernel: SAA716x FF 0000:03:00.0: I2C transfer error, msg 0, addr = 0x60, len=9, flags=0x0
Aug 12 08:51:59 htpc lircd[2420]: lircd-0.10.1[2420]: Info: removed client
Aug 12 08:51:59 htpc lircd[2420]: lircd-0.10.1[2420]: Info: closing '/dev/input/ir-auto_dtc'
Aug 12 08:51:59 htpc lircd-0.10.1[2420]: Info: removed client
Aug 12 08:51:59 htpc systemd[1]: easyvdr-systemstart.service: Failed with result 'exit-code'.
Aug 12 08:51:59 htpc lircd-0.10.1[2420]: Info: closing '/dev/input/ir-auto_dtc'
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Irgendwie soll es nicht sein...