[SOLVED] Can't see USB ethernet on "reboot" BUT PowerOFF/ON laptop can see USB in Proxmox

Robin_T

New Member
Jul 19, 2026
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Hello
Proxmox VE v9 is installed on ASUS Laptop. To have 1Gb network, I had to buy USB gigabit ethernet.
After many hours of configuring boot sequence and using GRUB AMD64(grubx64.efi), I finally got this USB working, except when I use a simple reboot sequence...

Booting from power off->on everything works from BIOS to Proxmox and USB gigabit is up and running.
If I click "reboot" on Proxmox GUI or reboot from terminal window, Proxmox will reboot but the USB will not show on "ip a".
efibootmgr is OK showing primary boot from grubx64.efi
ip a:
3: enx00e04c151320: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master vmbr1 state UP group default qlen 1000
link/ether 00:e0:4c:15:13:20 brd ff:ff:ff:ff:ff:ff

It seems reboot does not use grubx64.efi to load USB ports...
 
Salut François,
To your question:
Soft reboot: Goes from usb 1-6 to 1-8
[ 2.473312] usb 1-6: SerialNumber: 0x0001
[ 2.587427] usb 1-8: new full-speed USB device number 3 using xhci_hcd

Hard reboot: The USB gigabit device comes alive between 1-6 and 1-8
[ 2.491845] usb 1-6: SerialNumber: 0x0001
[ 2.580313] usb 2-1: new SuperSpeed USB device number 2 using xhci_hcd
[ 2.591877] usb 2-1: Int endpoint with wBytesPerInterval of 8 in config 2 interface 0 altsetting 0 ep 131: setting to 16
[ 2.592036] usb 2-1: New USB device found, idVendor=0bda, idProduct=8153, bcdDevice=31.fd
[ 2.592040] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=7
[ 2.592044] usb 2-1: Product: USB 10/100/1000 LAN
[ 2.592046] usb 2-1: Manufacturer: Realtek
[ 2.592049] usb 2-1: SerialNumber: DF1300E04C151320
[ 2.703274] usb 1-8: new full-speed USB device number 3 using xhci_hcd

To put it simpler and maybe is not the rigth forum, I need to always perform a HARD-reboot when a soft-reboot is called. Just like Windows it performs a hard-reboot after updates...

Debian has a systemctl --reboot command but it does not perform a complete hard-reboot. This is where I'm stuck!
 
François you have a twisted mind!!!
It worked, I can soft-reboot and the USB port is UP.
BUT this laptop only has 3.0 and 2.0 USB ports. The port that is working fine on soft reboot is 2.0, the 3.0 is not coming up.
And the speed decrease from 800mbps to about 300mpbs when using 2.0 port. But it's better than 100mpbs on the internal 100/ethernet port.

I will check if this laptop is at the latest frimware...

Am a new Proxmox user for 2 weeks (but sys admin Unix for ~25y, now retired) and this is a great software, I just love to play with it!
 
Merci my man.
Upgraded the firmware (2018 last version) but same result.
Since I have a working solution and laptop maybe to old to solve this issue, we'll close the case.
Thanks for the help, really appreciate it!