Guru
Joined: 31/12/2012
Location: New ZealandPosts: 2541
| Posted: 03:58pm 13 Dec 2024 |
just checked for something similar on mine:
user@user-DH61BE:~$ dmesg | grep "8250"
[ 0.233607] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
user@user-DH61BE:~$
[ 0.233607] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
user@user-DH61BE:~$
i am absolutely certain i don't have 32 serial ports here! my guess is that the kernel can accommodate up to 32 ports (or in your case 8, or 4 on the older kernel 5.6.14 system). if you do ls /dev/ttyS* do you see the corresponding number (8 or 4) on your systems?
is nearly 5am here, so i shall think more about this while i sleep!
cheers,
rob :-)