The Librem 13 comes with bluetooth hardware, but there's no free drivers for it. If you really need bluetooth you'll need the debian non-free repository:

```
echo "deb httpredir.debian.org/debian stretch non-free" | sudo tee /etc/apt/sources.list.d/debian-non-free.list
sudo apt update
sudo apt install firmware-atheros
sudo systemctl restart bluetooth
```

forums.puri.sm/t/bluetooth-not

I'm told this got fixed in current versions of PureOS, but in case it hasn't: The '\' key didn't work for me out of the box on the Librem 13, but adding the following lines to `/lib/udev/hwdb.d/60-keyboard.hwdb` fixes it:

```
# Purism Librem 13 V2
evdev:atkbd:dmi:bvn*:bvr*:bd*:svnPurism*:pn*Librem13v2*:pvr*
KEYBOARD_KEY_56=backslash

# Purism Librem 13 V3
evdev:atkbd:dmi:bvn*:bvr*:bd*:svnPurism*:pn*Librem13v3*:pvr*
KEYBOARD_KEY_56=backslash
```

Been loving my @Purism Librem 13... but as I've mentioned in the past, it can be a bit quirky. Time to start a quick thread documenting fixes for some of the more painful aspects.

I don’t know what I give up on, but I give up.

Let W be a natural number (including zero) and [W] be the set of all natural numbers less than or equal to W.

< (2^[W] x { T, F }), ([W], T), ([W], F), ⊕, ⊗ >,
where
(xw,xz) ⊕ (yw,yz) = (xw ∪ yw, xz ∧ yz)
(xw,xz) ⊗ (yw,yz) = ( (xw ∩ yw) ∪ ( xz ? xw ) ∪ (yz ? yw) , xz ∨ yz )
z ? w = if z then w else ∅

this mess is actually a semiring. That blows my mind.

Just fixed my old iPad 2 after a screen crack. Apple really needs to think more about repairability. Replacing some of that PitA glue with a few more screws would be well worth it.

Numberphile / Last Cards Match - Numberphile
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After about 2 months, I finally wrote up my thoughts on moving from my Macbook air to a new @Purism librem 13v3.

Main takeaway: It's quirky, but good. Still not a the I'd recommend it to anyone and everyone stage, but it's a solid linux laptop.

odin.cse.buffalo.edu/rants/201

A bunch of cheeses are in a room. Cottage cheese gets up and starts telling a wild story. The other cheeses are like No Way! Cottage cheese is like, yes whey!

Sooooo... how about that '\' key on the , @Purism ?

(Loving it in general... but no pipes seems like a pretty big oversight for a linux laptop)

With amortized data structures, the bill always comes due. Too many memoized sources...

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