Just out of curiosity, why did you choose to run such an old
distribution (16.04) of Ubuntu on a relatively new laptop?
I just happened to receive a marketing email from Lenovo this morning
(I've bought a few PCs from them in the past) that included the Carbon
X1 Gen 7 and I looked it up. It has USB 3.1 ports (2x Gen 2 Type-C with
Thunderbolt and 2x Gen 1). I'd think that you'd need the latest
possible version of Ubuntu (and the Linux kernel) to support this laptop.
Looking at the Ubuntu certification page for the Carbon X1, it shows as
having been tested with Ubuntu 18.04 LTS 64-bit.
Your symptoms (device appears, disappears, works sometimes but not
others) could be due to instability in the underlying kernel support for
the motherboard and/or USB controllers.
Another issue to investigate is the use of USB 3.1 ports. In the past
there have been issues with USB 3 ports causing RF interference with
devices that are connected. This mostly manifests with wireless
keyboards and mice, but it wouldn't surprise me if it was an issue
here. The common fix is to use a USB extension cable to move the USB
device away from the port.
On 2/17/20 7:39 AM, Kheong Sann CHAN wrote:
I had connected the cable, tried to access it from chirpw causing it
to disconnect a few times, by the time I did dmesg. I removed out the
multiple connect/disconnect lines from dmesg output because the
information was mostly duplicate.
On Mon, Feb 17, 2020 at 7:24 PM Tom Henderson <t...@henderson4.us
<mailto:t...@henderson4.us>> wrote:
Just double checking here. The log messages below show the cable
connecting, and then disconnecting. Had you disconnected the cable
again before running dmesg, or did the cable fail?
Tom Henderson
On 2/16/20 11:56 PM, Kheong Sann CHAN wrote:
The tty port is found when I plug it in:
$ dmesg | grep tty
[ 7527.188154] usb 1-2: pl2303 converter now attached to ttyUSB0
[ 7548.490452] pl2303 ttyUSB0: pl2303 converter now
_*disconnected*_ from ttyUSB0
_______________________________________________
chirp_users mailing list
chirp_users@intrepid.danplanet.com
<mailto:chirp_users@intrepid.danplanet.com>
http://intrepid.danplanet.com/mailman/listinfo/chirp_users
This message was sent to kheong sann at kheongs...@gmail.com
<mailto:kheongs...@gmail.com>
To unsubscribe, send an email to
chirp_users-unsubscr...@intrepid.danplanet.com
<mailto:chirp_users-unsubscr...@intrepid.danplanet.com>
_______________________________________________
chirp_users mailing list
chirp_users@intrepid.danplanet.com
http://intrepid.danplanet.com/mailman/listinfo/chirp_users
This message was sent to Aubrey Turner at aubrey.c.tur...@gmail.com
To unsubscribe, send an email to chirp_users-unsubscr...@intrepid.danplanet.com
_______________________________________________
chirp_users mailing list
chirp_users@intrepid.danplanet.com
http://intrepid.danplanet.com/mailman/listinfo/chirp_users
This message was sent to arch...@mail-archive.com at arch...@mail-archive.com
To unsubscribe, send an email to chirp_users-unsubscr...@intrepid.danplanet.com
