Jeff Geerling

...surprisingly, it looks like the Intel IGC driver is already present? ``` pi@pi5:~ $ dmesg | grep igc [ 5.532414] igc 0000:01:00.0: enabling device (0000 -> 0002) [ 5.532448] igc...

In dmesg, I see the following when I connect a cable: ``` [ 444.905640] igc 0000:01:00.0 eth1: NIC Link is Up 2500 Mbps Full Duplex, Flow Control: RX/TX ``` But...

Exploring PTP a bit: ``` pi@pi5:~ $ sudo apt install linuxptp pi@pi5:~ $ ethtool -T eth1 Time stamping parameters for eth1: Capabilities: hardware-transmit software-transmit hardware-receive software-receive software-system-clock hardware-raw-clock PTP Hardware...

To configure PPS signals from the NIC, I should be able to use the [`testptp`](https://github.com/opencomputeproject/Time-Appliance-Project/tree/master/Incubation/Software/testptp) software. Going to have to wrap up my testing today but will get back at...

I tested the other HAT that was shipped (both have a little EEPROM for the NIC that maybe dictates how DHCP works. It also doesn't retrieve an IPv4 address over...

Regarding the u-blox: It should be accessible via `/dev/ttyAMA0` at 115200 baud: ``` tio -b 115200 /dev/ttyAMA0 ``` `Ctrl-t`, then `q` to exit. (Except I'm not seeing `ttyAMA0` by default.)...

Looking around at GPS antenna and cabling guidelines, the first DDG result was from Masterclock! [GPS Antenna & Cable Information](https://www.masterclock.com/gps-antenna-and-cable-information.html). They recommend [four standardized antenna options](https://www.masterclock.com/cmss_files/attachmentlibrary/GPS-Antenna-and-Cable-Information/Masterclock-GPS-GNSS-Antenna-Options.pdf).

Just noting PTP works out of the box on CM5 (no HAT required ;) ``` pi@cm5:~ $ ls /dev/ptp* /dev/ptp0 /dev/ptp1 pi@cm5:~ $ cat /sys/class/ptp/ptp0/clock_name bcm_phy_ptp pi@cm5:~ $ cat /sys/class/ptp/ptp1/clock_name...

mDNS doesn't seem to be working on the i226 interface by default either, but possibly just because that interface isn't working in general, heh... The configuration currently: ``` pi@time-pi:/etc/NetworkManager/system-connections $...

After seeing [Connection loss with Intel Ethernet Controller I226-V](https://forums.debian.net/viewtopic.php?p=808075&sid=9ca5417b8d578edbc9f63f9f867b2eab#p808075), I added `pcie_aspm=off` to `/boot/firmware/cmdline.txt`, and that doesn't seem to help. I tried disabling WiFi with `nmcli radio wifi off` and...