Hey. Thanks. I managed to connect via serial. This is the last page of output:
[ 4.263776] phy phy-10120000.usbphy.0: UTMI 16bit 30MHz
[ 4.269118] ehci-platform 101c0000.ehci: EHCI Host Controller
[ 4.274983] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
[ 4.283164] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
[ 4.308675] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
[ 4.316167] hub 1-0:1.0: USB hub found
[ 4.320409] hub 1-0:1.0: 1 port detected
[ 4.329459] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 4.337382] ohci-platform: OHCI generic platform driver
[ 4.343043] ohci-platform 101c1000.ohci: Generic Platform OHCI controller
[ 4.350017] ohci-platform 101c1000.ohci: new USB bus registered, assigned bus number 2
[ 4.358133] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000
[ 4.423797] hub 2-0:1.0: USB hub found
[ 4.428044] hub 2-0:1.0: 1 port detected
[ 4.445410] MTK MSDC device init.
[ 4.488808] mtk-sd: MediaTek MT6575 MSDC Driver
[ 4.496803] sdhci: Secure Digital Host Controller Interface driver
[ 4.503152] sdhci: Copyright(c) Pierre Ossman
[ 4.509064] sdhci-pltfm: SDHCI platform and OF driver helper
[ 4.519467] usbcore: registered new interface driver usb-storage
[ 4.529148] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[ 4.546978] init: - preinit -
[ 5.389621] rt3050-esw 10110000.esw: link changed 0x00
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug[ 5.589270] random: procd: uninitialized urandom read (4 bytes read, 10 bits of entropy available)
level
[ 8.436149] jffs2: notice: (396) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
[ 8.455942] mount_root: switching to jffs2 overlay
[ 8.493035] urandom-seed: Seeding with /etc/urandom.seed
Error relocating /lib/libubus.so: uloop_cancelling: symbol not found
[ 8.617476] watchdog watchdog0: watchdog did not stop!
[ 8.622934] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00
[ 8.622934]
[ 8.633759] Rebooting in 1 seconds..
I remember seeing the Error relocating /lib/libubus.so: uloop_cancelling: symbol not found
or something similar while I was doing some opkg upgrade ...
, so presumably it's related to that.