For what it's worth it highly depends on what the laptop is designed to take advantage of; I will say there are a couple models out there that will charge on low-wattage power supplies if they are fully shut down and off, but will refuse to charge if on and consuming higher wattage. (IE: needs a 60W normally when on but will charge on 45W supply when off). Wouldn't hurt to test, but whatever you find it to do is what you get; Generally I don't know of any way to change the firmware programming for the USB controller and/or charge controller. Assuming charging functions are even configurable on whatever parts they installed in your specific model.
-Eitan <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Wed, Apr 20, 2022 at 9:13 PM Tomas Kuchta <[email protected]> wrote: > You need charger (or battery bank) with the appropriate USB PD version. > Most cheap phone charger do not talk USB PD - but - you could get one of > those and it should work with everything. > > USB PD 2 or 3 typically come as 45W or more. 60W ones are pretty small and > you could charge laptop, phone, battery bank off it. Framework sells one of > the GaN small 60W types for reasonable $$. Or bring your 100W laptop brick > for free to charge your phone fast. > > Hope it helps, > -T > > On Wed, Apr 20, 2022, 19:43 Eric House <[email protected]> wrote: > > > I have a brand new laptop, my first with nothing but USB ports (two C, > one > > old-style.) Ubuntu seems to run flawlessly, and it becomes part of my > > desktop setup via a single USB-C cable that carries Ethernet, video, > power > > and whatever connected USB peripherals require. It came with a 100W power > > brick that plugs into a USB-C port. > > > > My one disappointment is that it won't charge off anything but a > > laptop-caliber charger. I'd hoped that when traveling I could bring a > > single smaller phone charger and that, even if it took overnight, the > > laptop could be charged. Instead it doesn't recognize anything providing > > less than 30W or so. > > > > Does anybody know if that's something I can change, either by installing > or > > modifying software? Any suggestions where to start researching this? If > > it's not already obvious, I know next to nothing about USB. > > > > Thanks, > > > > --Eric > > > > PS I know there are some 30W chargers not much larger than phone > chargers. > > But I'd rather be able to use whatever happens to be available, either an > > older charger or USB battery pack, in a pinch. > > > > PPS It's an MSI "Prestige 14" ultrabook with 32G/1T. $1K at Costco on > sale. > > No touchscreen, and a lower-res screen that doesn't drain the battery on > > airplanes but drives a 4K monitor at home. I like! > > -- > > My g-bike can trounce your e-bike! > > >
