Category Archives: Hardware

Lenovo WWAN – Quectel EM120R-GL – No service

Just spent several hours fixing the “No service” cellular issue in my Lenovo T14 AMD Gen 2 with Quectel EM120R-GL. The notebook was able to search for networks (when disabled the automatic network selection), but was not able to connect to internet (Vodafone CZ mobile provider).

It was more and more obvious that the issue is related to the APN profile.

In the end I found the right settings which connected the notebook to mobile internet almost immediately:

My upgrade from Lenovo X1 Carbon 4gen to 6gen

Image result for lenovo x1 carbon 6th generation

My Confguration (20KH006MMC)

  • Intel Core i7 8550U Kaby Lake Refresh (Intel UHD Graphics 620)
  • 14″ LED 2560×1440 IPS HDR antireflex, 500 nits
  • RAM 16GB LPDDR3
  • 1TB SSD (M.2 PCIe NVMe)
  • 4G LTE

First Impressions

My first impressions of 6th gen in comparison to 4th gen:

  • The X1 Carbon 6gen looks great, the quality is almost perfect.
  • It is a little bit smaller and super-light (1,2kg).
  • The display is glossy. I usually prefer matte, but this one seems to be exceptional. It looks much more “bright”, although the red color is weird (over-saturated?).
  • It has rubber/soft texture (for me already known from my former T440s – looks good but is difficult to maintain + the edges will probably get bare soon).
  • The keyboard is softer and does not make any weird noises (MyX1-4gen produced rattling noises when typing). The typing seems to be more comfortable than the X1-4gen. The keyboard rattling was in fact the major deficiency I had with 4gen.
  • It produces more heat. Noticeably less comfortable to have it on a lap.
  • The 6gen battery gets exhausted pretty quickly. No improvement in comparison to 4gen.
  • Wake-up from sleep is pretty quick. It is ready right as you open the lid.
  • In Sleep mode it stays quite warm (= consumes battery).

Sleep Mode

Well, the last two items seems to be interconnected. The X1 6gen comes with so called “Standby (S0 Low Power Idle) Network Connected” power profile which keeps the notebook half-alive (able to download updates etc.). After switching the Sleep mode to S3 (switch sleep mode from “Windows 10” to “Linux” in BIOS) it is cold during Sleep. The wake-up is a little bit slower in S3 than in S0, but still pretty fast.