Debian ERROR:: usb 1-1.2: usbfs: interface 0 claimed by usb-storage while 'DeviceMana

[mshaffer]

Originally Posted by mlukaszek

You don't need any other utilities. udl is a kernel space driver for DL-1x5 that does not need anything extra in userspace to expose a /dev/dri/cardX (DRM) node that can be then used by X modesetting driver or anything else using libdrm.

Cheers,
Michal

Hi,

I am trying to follow your limited instructions. The link you provided has a lot of broken links.

Create Rule

#vim /etc/udev/rules.d/60-displaylink.rules
# DisplayLink devices always have the active configuration on configuration #1
SYSFS{idVendor}=="17e9", SYSFS{bConfigurationValue}=="2", RUN+="/usr/bin/dlconfig /sys%p/bConfigurationValue"

Rule drops device usb-storage as position #1 ???

vim /usr/bin/dlconfig
#! /bin/bash
if [ -e /sys$1/device/bConfigurationValue ]; then
    echo 1 > /sys$1/device/bConfigurationValue
fi;

if [ -e /sys$1/bConfigurationValue ]; then
    echo 1 > /sys$1/bConfigurationValue
fi;

Restart... udev rules

udevadm control --reload-rules && udevadm trigger

So now what?

Do I need dlm? how to start/stop?

will it start show up in xrandr ...

I am looking for a step-by-step solution if you can provide it...

Thanks.

[mlukaszek]

The driver we release for Linux only supports devices using newer chips than DL-1x5. As our release note states, support for older devices is provided by the Linux kernel community.

If you have the right udev rule around that echoes 1 to the bConfigurationValue of the usb device in sysfs, then after replugging the device udl should see your device and you should see evidence of it in your dmesg log.

Cheers,
Michal

[mshaffer]

Originally Posted by mlukaszek

The driver we release for Linux only supports devices using newer chips than DL-1x5. As our release note states, support for older devices is provided by the Linux kernel community.

If you have the right udev rule around that echoes 1 to the bConfigurationValue of the usb device in sysfs, then after replugging the device udl should see your device and you should see evidence of it in your dmesg log.

Cheers,
Michal

So I am trying to setup a situation where I have multiple devices. The smaller touchscreens are using DL-165. I am thinking about the "brain" - main touch screen being an AOC with your new chips. Based on what you are saying, it will not be possible to get the legacy chipset and the new chipset to run on the same machine?

[mlukaszek]

No, they should be fine together. The rule for setting the bConfigurationValue should only fire for devices which have configuration 2 by default, and it'd switch them to 1, allowing udl to see it - this would apply for DL-1x5.

The udev rule that we install for evdi (that starts DLM) is specific enough that it should not match old devices.

Cheers,
Michal