cheap laptop suggestions that will boot to ubuntu without hassle

[Mike Marchywka]

On Thu, Nov 28, 2019 at 07:25:11PM +0100, Liam Proven wrote:
> On Thu, 28 Nov 2019 at 19:07, Gene Heskett <gheskett at shentel.net> wrote:
> >
> > That hasn't hit me yet, Liam. But I also use a minimum of a 5 amp supply
> > too.

I'm curious now about running everything from 12v supply- the lap tops
mostly have 12v cigarette lighter/car adapters not sure about
raspberry or peripherals like cameras or measuring instruments
 etc. Apparently you can get chargers on Amazon for pretty cheap-
I guess these are probably switchers not now analog- and car batteries
are easy to get. Inverters to generate 120vac are available but if you 
could avoid that it would be nice. 

So, if I got a 12v car battery and say a 25 amp charger and a bunch
of cigarette lighter plugs what would not work?  
What are car or truck batteries, several hundred amp-hours? 

> 
> It's bitten a couple of friends of mine who use them for remote
> monitoring: i.e. boxes you can't get at. Some have killed cards so
> hard you can't even list them on other machines.
> 
> Also there's a "fun" new glitch on the RP4: a certain  screen res
> disables wifi (!)
> 
> https://www.enricozini.org/blog/2019/himblick/raspberry-pi-4-loses-wifi-at-2560x1440-screen-resolution/
> 
> They are complex little beasts.
> 
> > so I have setup a few gigs of swap on an ssd plugged into a usb to sata
> > adapter and turn off the file.
> 
> I use ZRAM on mine. No wear and no USB load.
> 
> > Debian puts an arm64 kernel on the pi for buster, but I've not found it
> > as stable as the raspbian armhf builds, which so far have run from power
> > bump to power bump even if its months. IRQ latency is less on the
> > armhf's anyway, an advantage for my LinuxCNC app.
> 
> There's a lot of stuff in Raspbian I didn't want so mine ran Lubuntu.
> Not used it in a while, though.
> 
> > blister pack card of one disclosed there was a diff. IIRC one was marked
> > SDHC and one was marked SDHCX. SDHC worked, even dd couldn't write to
> > the SDHCX.
> 
> Do you mean SDXC? That uses ExFAT. Linux supports that fine:
> 
> https://itsfoss.com/mount-exfat/
> 
> Anyway, ExFAT is going FOSS:
> 
> https://www.zdnet.com/article/microsoft-readies-exfat-patents-for-linux-and-open-source/
> 
> 
> -- 
> Liam Proven - Profile: https://about.me/liamproven
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-- 

mike marchywka
306 charles cox
canton GA 30115
USA, Earth 
marchywka at hotmail.com
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ORCID: 0000-0001-9237-455X