HEX-V2 Firmware 0.258 USB Power Consumption

Hello

After the FW update to 0.258 on my Lenovo laptop Thinkpad E15 Gen3, the HEX-V2 is no longer recognized.
The window is running in a VM, and the host Linux kernel repeatedly reported:
device descriptor read/64, error -110
what does it mean that a USB device is consuming too much power and constantly resetting?

On a desktop PC, the HEX-V2 interface runs with the same Windows VM without errors, as far as I have been able to determine so far. Initially, I thought there might be a problem with the firmware update.

It no longer works on either of the laptop's USB ports, both immediately after the update and after a restart, regardless of whether it's connected with or without the power adapter, while other devices still function as before.
The power consumption seems to be just exceeding the laptop's limit.

Has anything changed with 0.258 that could explain the increased power consumption?

Has anyone else experienced this?

Hi,

As far as I know, nothing has changed, what does Linux say?

Quote:

lsusb -v | grep MaxPower

What does the interface want?

Best regards, Rainer

Hi
On PC and laptop, a maximum of 500mA is displayed.

It seems like I need a bit more, or the laptop is providing a bit too little, which I can't measure right now.

I bought a USB hub from Sabrent, model HB-UMP3, with a power supply, and it's working again on my laptop. So, it definitely has something to do with power consumption.

The only thing that had changed was the HEX-V2 firmware version 0.258, and immediately after the update, the -110 errors appeared in the /var/log/messages log file on the Linux host, and Windows reported "USB device not working".

The matter is still a bit more complicated:

The HEX-V2 also works on the laptop with the external USB hub, even when the hub's power adapter is not connected...

Here are the USB data:

With HUB, without HEX-V2, WITHOUT HUB power supply
linux1:/var/log # lsusb -v | awk "/^Bus / || /MaxPower/"
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MaxPower 0mA
Bus 003 Device 003: ID 0bda:4852 Realtek Semiconductor Corp. Bluetooth Radio
MaxPower 500mA
Bus 003 Device 002: ID 04f3:0c4b Elan Microelectronics Corp. ELAN: Fingerprint
MaxPower 100mA
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MaxPower 0mA
Bus 002 Device 006: ID 05e3:0626 Genesys Logic, Inc. Lift
MaxPower 0mA
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MaxPower 0mA
Bus 001 Device 002: ID 13d3:56fb IMC Networks Integrated Camera
MaxPower 500mA
Bus 001 Device 022: ID 05e3:0610 Genesys Logic, Inc. Lift
MaxPower 100mA
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MaxPower 0mA

# With Hub, with HEX-V2, WITHOUT Hub Power Supply
linux1:/var/log # lsusb -v | awk "/^Bus / || /MaxPower/"
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MaxPower 0mA
Bus 003 Device 003: ID 0bda:4852 Realtek Semiconductor Corp. Bluetooth Radio
MaxPower 500mA
Bus 003 Device 002: ID 04f3:0c4b Elan Microelectronics Corp. ELAN: Fingerprint
MaxPower 100mA
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MaxPower 0mA
Bus 002 Device 006: ID 05e3:0626 Genesys Logic, Inc. Lift
MaxPower 0mA
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MaxPower 0mA
Bus 001 Device 002: ID 13d3:56fb IMC Networks Integrated Camera
MaxPower 500mA
Bus 001 Device 023: ID 0483:a0cb STMicroelectronics Ross-Tech HEX-V2
MaxPower 500mA
Bus 001 Device 022: ID 05e3:0610 Genesys Logic, Inc. Lift
MaxPower 100mA
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MaxPower 0mA

So, there can't be a real "power" problem, because the laptop's USB port can
Supply both the hub and the HEX-V2 attached to it.

Without the HUB in between, the -110 error reappears.

OK, let's see if others are having the same issue.

Otherwise, I would simply try a different laptop.

The error message is definitely caused by the power supply and not another Vendor/Device-ID?