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ttyacm: serial port keep changing on Synology after restart
Posted: Sunday 10 April 2016 8:50
by gdusordet
hi,
I had to reset my Aeotec Z-Stick Gen5 contoller which is connected to my Synology server. Each time I am rebooting Synology, it keep changing the serial port from /dev/ttyacm0 to /dev/ttyacm1 or /dev/ttyacm1 to /dev/ttyacm0. Any idea how to prevent it from changing the serial port after a restart?
thanks
G
Re: ttyacm: serial port keep changing on Synology after restart
Posted: Sunday 10 April 2016 9:01
by woody4165
Have you read the Wiki?
Don't know if applicable to Synology, but it's Linux, you can try this.
http://domoticz.com/wiki/PersistentUSBDevices
Re: ttyacm: serial port keep changing on Synology after restart
Posted: Sunday 10 April 2016 9:53
by gdusordet
thanks but I could not make it work for Synology
Re: ttyacm: serial port keep changing on Synology after restart
Posted: Wednesday 23 November 2016 11:22
by gooxbe
Maybe if you want to use lsusb, you should install usbutils with ipkg.
Hope this helps (maybe a bit late but want people who have the same question to find an answer), I'm in the same process.
Re: ttyacm: serial port keep changing on Synology after restart
Posted: Saturday 10 December 2016 17:47
by amwr
Same problem here. I had to change from the old stick to Gen5 and now the ttyACM keeps switching between 0 and 1. Have you found a solution for Synology?
Re: ttyacm: serial port keep changing on Synology after restart
Posted: Saturday 10 December 2016 22:35
by Egregius
Is that with Jadahl's package?
Re: ttyacm: serial port keep changing on Synology after restart
Posted: Sunday 11 December 2016 10:39
by amwr
Is that with Jadahl's package?
Yes. The latest DSM6 stable release.
Another (related?) problem is that after each reboot of the Synology the driver fails. After disconnecting and reconnecting the stick it works again.
Re: ttyacm: serial port keep changing on Synology after restart
Posted: Sunday 11 December 2016 10:58
by Egregius
Strange, never seen this with my S2 stick. I'm planning a replacement, will monitor this topic
Maybe an idea to contact Jadahl to see wth he thinks of it?
Re: ttyacm: serial port keep changing on Synology after restart
Posted: Thursday 19 April 2018 14:18
by teo1966
gdusordet wrote: ↑Sunday 10 April 2016 8:50
hi,
I had to reset my Aeotec Z-Stick Gen5 contoller which is connected to my Synology server. Each time I am rebooting Synology, it keep changing the serial port from /dev/ttyacm0 to /dev/ttyacm1 or /dev/ttyacm1 to /dev/ttyacm0. Any idea how to prevent it from changing the serial port after a restart?
thanks
G
i have the same