Hello everybody, I’ve been using the L5 as my main and only mobile device for approximately two years. I had an hardware problem (sd card not working) which got fixed with an RMA, and it stopped working again after a few days. I did not want to delete all my data again and wait for another fix, so I kept it broken. Everything else went well hardware-side (except bad gps reception and slightly faulty usb-c connection which makes the use of external displays really difficult, as a slight move of the device caused video problems and charging problems in general, but I kept using it every day). However, the 18th of March the modem stopped working. I’m not sure it’s a faulty modem as I suspected a faulty hardware kill switch, so I asked the support. When I turn off the HKS (or turn the modem ON) the dmesg shows error like:
[30953.093983] usb 1-1-port2: Cannot enable. Maybe the USB cable is bad?
[30953.969893] usb 1-1-port2: Cannot enable. Maybe the USB cable is bad?
[30953.976731] usb 1-1-port2: attempt power cycle
So before ordering a 50€ modem + shipment + taxes I thought it was better to ask support for a repair center in Europe. I’d better pay for a checkup of my phone than just blindly try to replace the modem.
Joao replied that
I’m afraid we have no support in the EU at the moment
He asked for the kernel log and to remove usbguard, which did not hel, the 27th of March.
I did not have any reply from him since, despite a couple of more mail sent by me (the last one on the 6th of July). My doubt of the modem being the (only) culprit increased as one day the modem started working out of nowhere, with the HKS in a mid-position (neither fully ON nor fully OFF), but I could not replicate it since.
Do any of you knows how to proceed? I’ve not been using my L5 in the last months as not being able to use the modem it’s quite useless (I use it with an hotspot sometimes for messaging on telegram), and I’d really like to restart using it. In the meantime I also broke the glass (so I’d need to replace it), but before investing and giving other money to purism I’d like support to support me on this.
Thanks!
Edit:
I’d also add that, looking at the schematics, I guess that there are other two components which if broken could explain the modem not working
My guess is either one of the two AP2281-1FMG, causing not enough current to be delivered to the modem, or the RB751G-40 Schottky, which if I’m not mistaken, if is broken (always closed) can cause mid-level voltages on the AP2281-1FMG enable pin.