Type-C Power Adapter

Which Type-C power adapters are working for everyone?

I have tried a Lenovo 4X20M26252

https://www.lenovo.com/us/en/accessories-and-monitors/chargers-and-batteries/chargers/PWR-ADP-BO-Type-C-45W-Adapter/p/4X20M26252

This adapter is 45watt and supports PD.

With this adapter the machine will boot the Android image but the ethernet does not work.

With the Ubuntu image it takes 5+ mins with a black screen to boot up. Eventually you get a login prompt which is very sluggish and when you try to use the firefly/firefly username and password it will freeze for two mins and return back to the login prompt. Also the Nic does not appear to be working I have link light and my switch see's a 1gigabit link but I am not seeing a DHCP lease on my router.

I have also tried a 5v LG type-c adapter with the same results.

When creating the sdcard I have used DD with various settings and etcher all with the same results for both the Android and Ubuntu image.

Comments

  • Have you tried dhclient? It doesn't mean the board doesn't work if the image is not setup to automatically get an IP.
    If Ubuntu is incredibly slow, it is probably your SD card write performance is garbage. Look for errors in dmesg dmesg | grep mmc.

  • Here is the power adapter that I used:
    https://www.amazon.com/gp/product/B07194RXTS/ref=ppx_yo_dt_b_asin_title_o05__o00_s00?ie=UTF8&psc=1

    It did not have a problem with Android or Ubuntu. Both booted up without issue.

    I don't believe your networking problems are related to the power.

  • edited February 4

    I have a Belkin F7U010vf (45W), works perfectly.

    The device will boot a SD-card using a standard (USB-C DP) 3W phone charger, including ethernet, USB wireless keyboard/mouse combo and HDMI @ 4K. I suspect that this is neither supported or recommended as I don't know what will happen when more power is demanded.

    With regards to the freezes you mention, I have attributed these to io (i.e. the crappy SD card I'm using). I have an eMMC card lying around somewhere, will try with that to see if this solves the freezes. Alternatively, a proper image (loverpi promised ~ a month) might be a better starting situation to troubleshoot.

  • I'm using this 45W (15V@3A capable) adapter:
    https://www.amazon.com/dp/B0719KV9PH/

    Running Android 8.1 on microSD, Kill-A-Watt registers 3W usage when sleep, 4-6W usage running Geekbench. No issues with network.

  • @loverpi SD card speed garbage? I have a 128 gb Lexar SD card rated at 633x (95MB/s) Read and (20MB/s) Write. Is this garbage in your book? Because the Ubuntu image is hella slow on this card. I honestly think you should refrain from using words like "garbage".

  • edited February 12

    @karendar said:
    @loverpi SD card speed garbage? I have a 128 gb Lexar SD card rated at 633x (95MB/s) Read and (20MB/s) Write. Is this garbage in your book? Because the Ubuntu image is hella slow on this card. I honestly think you should refrain from using words like "garbage".

    20MB/s write is usually TLC flash. They are extremely slow in terms of both write IO throughput and latency. Use MLC like Samsung Pro or Sandisk Extreme. They are more than 10 times faster in terms of write IO and have much lower write latencies.

    Lexar was recently purchased by Longsys and most of their cards use controllers by Yeestor. The flash they used is mediocre at best and the controllers are nothing to write home about.

  • I was initially trying to to use a Samsung Evo 32gb card that was extremely slow. Ended up replacing it with a Samsung Evo Plus 32gb card and I can now boot to the desktop in around 10 seconds. Part of the issue I was having with the original card was how long it took to resize/expand the partition on first boot up.

  • @karendar said:
    @loverpi SD card speed garbage? I have a 128 gb Lexar SD card rated at 633x (95MB/s) Read and (20MB/s) Write. Is this garbage in your book? Because the Ubuntu image is hella slow on this card. I honestly think you should refrain from using words like "garbage".

    Look for SD cards with A1 or A2 ratings:

Sign In or Register to comment.