Notices by Manawyrm | Sarah (manawyrm@chaos.social)

@ryanc @gsuberland hmm, sad -- I don't see anything very helpful :/

@gsuberland @ryanc yeah, glasgow can just do that upstream these days.

@ryanc @gsuberland no, those are sadly just fiducial markers:
https://en.wikipedia.org/wiki/Fiducial_marker#Printed_circuit_boards

I don't see any relevant pins/testpoints on the photos on openwrt.org, maybe something below the RF shielding? hmm..

@ryanc yeah, that does require a bit of pratice first... :(

holding the CPU in reset would probably work, but I didn't see anything that looks like JTAG pins on your board.

@gsuberland @ryanc yeah, I've been there... this happened to me on a NXP QorIQ PowerPC platform and then I had to add an inline resistor with the CS line like this:

That was a bit tricky...

@gsuberland @ryanc IPQ40xx (like in Ryan's AP) will go High-Z on the flash chips when in reset, though, I've done this in the past.

@ryanc if all else fails, I do crap like this:

TOSLINK is one of the very few consumer fiber optical standards. It transports digital, uncompressed PCM audio over plastic fibers.

Why not transport IP-over-Toslink instead?
It's a 1.536 Mbit/s data link after all...

https://www.youtube.com/watch?v=9uWi8iWym9c

New blogpost:
https://kittenlabs.de/ip-over-toslink/

/cc @n0emis @benjojo

@dalias @marcan "You're wrong to want that and here's why" sounds good to me as a user. I learned something and know what to expect now.

@mia there is a funny redneck on YouTube who has done exactly that (but I can't remember the channel name now. Guy with a big beard...)

tl;dr: Works, EMI is a nightmare, otherwise possible.

Got a chance to play with new WiFi hardware:
BananaPi BPI-R4, mt76-based WiFi 7 7/802.11be access point.

Support in mainline OpenWRT is now good enough to "just work".
No MLO support yet, WIP.

Client is a Intel BE200 M.2 card, 2x2 MIMO.
Was able to get MCS13 (aka 4096QAM) working at 320 MHz, which results in a 5.7Gbit/s PHY rate and ~3Gbit/s of actual TCP throughput.

BE200 drivers on Linux still seem a bit wonky, "only" 2 Gbit/s on Linux.
Windows 11 works as expected.

https://openwrt.org/inbox/toh/sinovoip/bananapi_bpi-r4

@ryanc fs optics come with pretty nice PDF datasheets, always worth having a look into.

Basically the only thing you don't want to do is to connect 60km optics with a meter of cable, or you'll blow the receiver out of the other end :)

@astrid @ryanc indeed! most transceivers have some protection against operating at high powers without a bidirectional link, but I would _NOT_ recommend going anywhere near the fiber with your eyes on a high power transceiver.

the 0dBm of your transceiver is about 1mW, which is still eye-safe (still don't do it!), anything above that is getting seriously dangerous!

@ryanc Check the sfp-rx-power shown is within the maximum receive levels of your SFP used — otherwise, sure.

For a typical 2km transceiver, those values are perfectly good.

@ryanc bootloader correctly installed as removable? (aka BOOTX64.EFI file present on the FAT partition?)

EFI non volatile storage is a huge, unreliable shitshow...

@brouhaha @gsuberland @ryanc Was pretty common over here in EU, though, most DVD players would output closed captioning in the vertical blank as a teletext signal... So at least some info should be there.

@q3k @artemist @wolf480pl

I'm always doing this sort of stuff on my machines:
# cat /etc/udev/rules.d/70-if-names.rules
SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="36:8a:56:7b:8c:d7", NAME="locix"

systemd can then do whatever the hell it wants, but my interfaces names will stay the same :)

@BradRubenstein I fail to see your point? Firefox does this, Windows does this, it's just normal at this point?

@janne @marcan one of the many, yes.

There's big lists of adapters and their various quirks.
The Pi community also often manually disallows UASP for broken converters via "usb-storage.quirks=" cmdline...

I recently bought a USB3 3.5" sata enclosure where the JMicron chip would just overheat and then hang. After removing the case and adding one of those Pi heatsinks, it managed to keep working. *sigh*

@killyourfm over here, your ISP _and_ your phone provider billed by the minute :<
that was annoying. quickly got the first download manager tools that could resume downloads.

edonkey was also pretty nice (well, mostly for illicit stuff) but the download mechanism was pretty robust and could resume/survive a broken connection.

yeah, that first 768kBit/s line (much later) was a real win!