With both adapters attached at power-on, pcan registered first and took
can0, and the udev rule renamed it to can_pcan, confirming the race and
the fix. qmi_wwan auto-loaded, povo auto-connected below WiFi, and gpsd
came up on the stable symlink.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The driver source sat in /tmp and was gone after a reboot, leaving the
"after a kernel update" steps unusable. Re-fetched PEAK 9.2.0 into
~/infra/peak-linux-driver-9.2.0 per GUIDELINES §1; it is the same
release as the installed pcan.ko (Release_20260707_n).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
mttcan and pcan both load at boot, so the PCAN adapter could take can0
and push the onboard controller to can1. A udev rule now names them
can_onboard (platform c310000.mttcan) and can_pcan (USB 0c72:000c),
both outside the canN pool so a transient canN can never collide.
Also records why the SIM7600 needs nothing more: ModemManager and NM
don't use ttyUSB numbers, and gpsd already uses a symlink.
can_onboard is verified live; can_pcan is checked against the driver
source only (adapter not plugged in).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The L4T kernel ships without qmi_wwan/cdc-wdm, and PPP dial-up made KDDI
detach the povo SIM (attach APN was au's; PPP re-activating the default
bearer still detached). Built both modules out of tree from v5.15.148
into ~/infra/qmi_wwan, set the attach APN to povo.jp, and added an NM
connection at metric 1000 so LTE ranks below Ethernet and WiFi.
GNSS autostarts on the modem and gpsd reads /dev/sim7600-gps (udev
symlink on interface 01); no fix yet, tested indoors.
BOM: NMEA is on ttyUSB1 not ttyUSB3, and the data path is QMI, not
RNDIS/PPP.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The original report was written on another host. On this machine the
pcan module (NETDEV_SUPPORT) is built, installed under misc/, and loaded
at boot via /etc/modules; the adapter was not yet plugged in. Adds the
verification and post-kernel-update rebuild steps.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Orin Nano Developer Kit exposes no DSI connector — the module carries DSI
on SODIMM pins but the reference carrier board does not break them out, and
DisplayPort is its only display output. The Waveshare panel is also a
Raspberry Pi accessory and mechanically incompatible. It could not have been
connected without a custom carrier board.
Moot regardless: the tablet is the display, and no dedicated display is in
scope. The entry was still marked research pending / TBD.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013kj58Jugkic783b8ZrtTVZ
Replaces `type: default` — one value across every document, read by nothing.
Types are now reference, guidelines, plan and report; plans carry status and
updated, reports carry date. Convention documented in project-yukart REPOS.md.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013kj58Jugkic783b8ZrtTVZ
mikkeli
mikkeli