Hi, Lukas On Mon, Sep 21, 2026 at 06:26:57PM +0200, Lukas Rotermund wrote: > Hello, > > this is my first time writing to a mailing list, so when I did something wrong > please tell me! > > I am writing you because I am trying to install the NetBSD install img on my > Thinkpad T490. Every boot of the flashed img results in the error of the > attached image. The kernel boot process is stuck there four hours. Nothing > happens after the last line anymore. > > ``` > [ 7.2381348] uhub1: device problem, disabling port 4 > [ 12.7181348] uhub1: device problem, disabling port 6 > [ 18.1981351] uhub1: device problem, disabling port 8 > [ 23.6781350] uhub1: device problem, disabling port 10 > [ 23.7081318] swwdog0: software watchdog initialized > [ 23.7381315] boot device: <unkown> > ``` > Those "uhub1" errors are related with the USB subsytem / xhci driver,
For intance, on my laptop I get: [ 1,166153] uhub1 at usb0: NetBSD (0x0000) EHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 1,166153] uhub1: 3 ports with 3 removable, self powered So it seems something is wrong with USB either at hardware or kernel level in your box. > I tried flashing the image from multiple linux systems (mint & void) with > `sudo > dd if=...install.img of=/dev/sda bs=2M` and also with fsync. I synced after > flashing with `sudo sync`. > > I tried it with 10 different old usb sticks and 2 off the shelf/ new ones > that I > bought today. Every scenario resulting in the same error. After booting 1-2 > times, the USB sticks get bricked with >4000 bad blocks. Resulting in not > booting the kernel anymore. > Every once and then a pendrive can be bad, but having *all* the usb sticks damaged is *highly unlikely* . Some random ideas: Did you try plugging the stick and booting from a different USB port? Do you have access to another laptop / computer just to test the boot process with that image? PS: Although does not seem to be the scenario, is always a good idea to check the integrity of the downloaded file against its MD5 hash (https://cdn.netbsd.org/pub/NetBSD/images/11.0/MD5) Hope it helps! Best,
