I got CP2102 Breakout. I tried to use it with Linux but unfortunately
it doesn't work at all, it doesn't show up in lsusb output and is not
mentioned by dmesg. After plugging it into USB port on my PC a red LED
is on and that's all. It's not drivers-related problem - USB device
should always show up in lsusb output if it works correctly no matter
whether appropriate drivers are loaded or not. Other USB devices work
correctly on this PC so it's not a problem.
On the chip it says 10/12 V2.0. I didn't solder anything.
Are some CP2102 broken? Is this a known issue? What else can I check?
I did not fully understand your question.
What do you mean by "I got CP2102 Breakout"?
Are you using the CP2102 EK board (http://www.silabs.com/products/interface/Pages/default.aspx)?
Do you have another PC (windows) to try to confirm this CP2102 works on that PC or not to isolate if this is CP2102 issue or related with your PC?
My views are my own and do not necessarily represent the views of Silicon Labs
The CP2102 has been supported since Linux kernel version v2.6.12. Can you make it connected in other machine or OS?
I have this: https://i.imgur.com/AgCTlk8.jpg,
https://i.imgur.com/8VZLGAY.jpg. I tried it on Windows XP too but it
doesn't work neither. This is not a drivers problem - neither Windows
nor Linux can even recognize this device. It doesn't even show up in
Device Manager in Windows XP or in lsusb output on Linux. It looks
like it doesn't report its ID to the operating system. I have never
encountered such situation.
ok, here they are
I don't know where you bought this device, I don't have this type of board and not sure how the device is powered. I saw there is VCC and GND on the expansion interface, not sure if it is self powered. Do you have document for this device, maybe you could read the user guide document for it to know if you need power the device with a dedicated power supply.
Maybe below KB article helps: