Frequently Asked Questions

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263 thoughts on “Frequently Asked Questions

  1. FJedjit

    Still having the problem when Calibre is launched from within firetools, and use ‘Add Books’ function. I get: Error. Unable to create io-slave. Cannot create socket for launching io-slave for protocol ‘file’.

    Will version 0.9.52 fix this problem then?

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    1. netblue30 Post author

      Try out Firejail 0.9.52 with or without Firetools. If it is still not working, let me know and I’ll bring in a fix for the next version, or some workaround.

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      1. FJedjit

        Thanks for replying. I am using FJ 0.9.52. Tried running it outside of FT and got this output. Being an edjit, I’m of course clueless as to what it means. Perhaps if something is not right you will be able to tell?

        Yet Calibre does open. I just cannot use the Add book function.

        thx

        [@localhost ~]$ firejail calibre

        Reading profile /etc/firejail/calibre.profile
        Reading profile /etc/firejail/disable-common.inc
        Reading profile /etc/firejail/disable-passwdmgr.inc
        Reading profile /etc/firejail/disable-programs.inc
        Reading profile /etc/firejail/whitelist-var-common.inc
        Parent pid 6052, child pid 6053
        Blacklist violations are logged to syslog
        Child process initialized in 83.37 ms
        sh: line 1: 7 Bad system call LANG=C LC_ALL=C $CC -Wl,-t -o /tmp/tmppLSJd1 -lpthread 2>&1
        QML debugging is enabled. Only use this in a safe environment.
        QStandardPaths: XDG_RUNTIME_DIR points to non-existing path ‘/tmp/runtime-me’, please create it with 0700 permissions.
        sh: line 1: 13 Bad system call LANG=C LC_ALL=C $CC -Wl,-t -o /tmp/tmp17HhJv -lfontconfig 2>&1
        sh: line 1: 18 Bad system call LANG=C LC_ALL=C $CC -Wl,-t -o /tmp/tmpzVjuvg -luuid 2>&1
        sh: line 1: 22 Bad system call LANG=C LC_ALL=C $CC -Wl,-t -o /tmp/tmp50qaXX -lc 2>&1
        libGL error: failed to open drm device: No such file or directory
        libGL error: failed to load driver: i965
        Exception in thread Thread-9:
        Traceback (most recent call last):
        File “/usr/lib64/python2.7/threading.py”, line 810, in __bootstrap_inner
        self.run()
        File “/usr/lib64/calibre/calibre/utils/mdns.py”, line 43, in run
        _all_ip_addresses = self.get_all_ips()
        File “/usr/lib64/calibre/calibre/utils/mdns.py”, line 27, in get_all_ips
        for x in netifaces.interfaces():
        OSError: [Errno 95] Operation not supported

        sh: line 1: 52 Bad system call LANG=C LC_ALL=C $CC -Wl,-t -o /tmp/tmpHznYSZ -lpthread 2>&1
        libudev: udev_monitor_new_from_netlink_fd: error getting socket: Operation not supported
        UdevQt: unable to create udev monitor connection
        QStandardPaths: XDG_RUNTIME_DIR points to non-existing path ‘/tmp/runtime-me’, please create it with 0700 permissions.
        kf5.kio.core: KIO Connection server not listening, could not connect
        kf5.kio.core: couldn’t create slave: “Can not create socket for launching io-slave for protocol ‘file’.”
        QStandardPaths: XDG_RUNTIME_DIR points to non-existing path ‘/tmp/runtime-me’, please create it with 0700 permissions.
        kf5.kio.core: KIO Connection server not listening, could not connect
        kf5.kio.core: couldn’t create slave: “Can not create socket for launching io-slave for protocol ‘file’.”
        [00000000051f8110] vlcpulse audio output error: PulseAudio server connection failure: Connection refused
        [0000000005338670] vlcpulse audio output error: PulseAudio server connection failure: Connection refused
        [0000000005338670] main audio output error: no suitable audio output module
        [00007f4fe0022490] vlcpulse audio output error: PulseAudio server connection failure: Connection refused
        [00007f4fe0022490] main audio output error: no suitable audio output module
        [00007f4fe801c950] main decoder error: failed to create audio output
        [00007f4fe0022490] vlcpulse audio output error: PulseAudio server connection failure: Connection refused

        . . . and it goes on and on like this for many lines.

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  2. ShadowSlayer420xxx

    Hey I’ve been having difficulties with setting up apparmor confinement with Firejail. Firstly, Firejail when I downloaded it didn’t ship with the apparmor profile to /etc/apparmor.d. It was located with the rest of the profiles in /etc/firejail. So I moved it from that directory to /etc/apprmor.d and enforced the profile. Then I tried to run “firejail apparmor firefox” and it came back “Error: no suitable apparmor executable found.”

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    1. netblue30 Post author

      You are missing apparmor support in the sandbox software. The easiest way to get it is to compile Firejail yourself. I added some information about enabling apparmor on Downloads page in “Source Code” section. After compile, when you install it, it will also install /etc/apparmor.d/firejail-default profile.

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      1. ShadowSlayer420xxx

        I tried compiling and installing Firejail from source to get the apparmor support and it gave me an error that I was missing sys/apparmor. I tried to find the package by a quick google search but I’m not sure what it’s asking me to get.

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  3. rfte

    firejail for online gaming that require flash enable.
    i like to play littlebigsnake[online game ] but it require flash to play,
    i tired use firejail but it make it very laggy and apparently chrome its the only browser you can play without lagging at least in ubuntu os even without firejail

    any suggestion how i enable firejail without laggs

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    1. netblue30 Post author

      I’ll try to reproduce it here, however I’ve never seen anything similar. What happens if you run firejail with –noprofile (add –noprofile on the command line)? This will turn off most firejail features.

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