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  1. #16
    Join Date
    Sep 2004
    Linux (Fedora) Firefox 62.0

    Re: Broken applications

    I think it is a SELinux issue here, with usbview in Fedora 28.

    I did as a Wayland session owner user:
    $ xhost +si:localuser:root
    localuser:root being added to access control list
    ...and then in xterminal as root:
    # export DISPLAY=:0
    # xmessage test if this works
    It works. root can use Wayland desktop from commands started from xterminal.

    I am also able to start usbview, but it complains it cannot read /usr/kernel/debug/usb/devices
    Can not open the file /sys/kernel/debug/usb/devices

    Verify that you have USB compiled into your kernel,
    have the USB core modules loaded, and have the usbdevfs filesystem mounted.
    # ll -Z /sys/kernel/debug/usb/devices 
    -r--r-xr-x. 1 root root system_u:object_r:debugfs_t:s0 0 Sep 11 15:46 /sys/kernel/debug/usb/devices
    # cat /sys/kernel/debug/usb/devices 
    cat: /sys/kernel/debug/usb/devices: Operation not permitted
    However, sealert (SElinux troubleshooter viewer) doesn't see any SELinux warnings or notices.

    Both local (Wayland) user and root can however use CLI lsusb to list usb-devices and see even details with -v option.

    So what could be wrong and how to fix it?

  2. #17
    Join Date
    Jan 2013
    New York state in USA
    Linux (Fedora) Firefox 62.0

    Re: Broken applications

    As you have seen in this thread, and might find in other posts I have made here, as well as comments made in bug reports, this is not a matter of setting / changing some parameters.

    If you want to run these applications under Wayland, I have found that patience is required. First Wayland is not complete. From what I understand all the big essential features are done, but there are still a lot of things to do. From the last I read it will be several months yet until it is in final form with everything implemented that they have planned for it. Then the authors of the applications need to make changes in their applications so they are compatible with the new Wayland security measures.

    I contacted two of the authors back in early 2017 and they were waiting for Wayland to settle in before they started modifying their code. Can't blame them for not wanting to chase a moving target. Then, of course, there is the issue as to if the authors will have an interest in continuing to maintain those applications, or time to do it. If not, it will come down to if some other folks, maybe some of us, have the time, skill, knowledge, and interest to adopt the applications or write new ones.
    Have a Great Day!

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