Bug 2169522
| Summary: | xvfb-run "-l" or "--listen-tcp" option does not work | ||||||
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| Product: | Red Hat Enterprise Linux 8 | Reporter: | Carlos Santos <casantos> | ||||
| Component: | xorg-x11-server | Assignee: | Olivier Fourdan <ofourdan> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Desktop QE <desktop-qa-list> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 8.7 | CC: | ndegraef, ofourdan, tpelka | ||||
| Target Milestone: | rc | Keywords: | Triaged | ||||
| Target Release: | --- | Flags: | pm-rhel:
mirror+
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| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | xorg-x11-server-1.20.11-15.el8 | Doc Type: | If docs needed, set a value | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | |||||||
| : | 2172116 (view as bug list) | Environment: | |||||
| Last Closed: | 2023-05-16 08:32:34 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | 2172116 | ||||||
| Bug Blocks: | |||||||
| Deadline: | 2023-02-20 | ||||||
| Attachments: |
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Created attachment 1945526 [details]
xvfb-run
Can you please try this version and report?
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: xorg-x11-server security and bug fix update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2023:2806 The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days |
Description of problem: The xvfb-run "-l" or "--listen-tcp" option does not work Version-Release number of selected component (if applicable): xorg-x11-server-Xvfb-1.20.11-9.el8.x86_64 How reproducible: Always Steps to Reproduce: 1. Install xorg-x11-server-Xvfb and xterm 2. Log in via GDM 3. Open a gnome-terminal window and run this test command: $ xvfb-run -d -l -s "-ac" bash -c "export DISPLAY=localhost\$DISPLAY; xterm -e 'echo hello;sleep 1';" Actual results: xterm: Xt error: Can't open display: localhost:2 Expected results: xterm should run using a Xvfb server that listens at localhost, port 6002. Additional info: As a workaround, it's possible to pass "-isten tcp" to Xvfb: $ xvfb-run -d -l -s "-ac -listen tcp" bash -c "export DISPLAY=localhost\$DISPLAY; xterm -e 'echo hello;sleep 1';" The cause of the problem is that when we pass "-l" or "--listen-tcp" to xvfb-run it sets the LISTENTCP variable to empty: LISTENTCP="-nolisten tcp" ... while :; do case "$1" in -a|--auto-servernum) SERVERNUM=$(find_free_servernum) ;; -d|--auto-display) AUTO_DISPLAY=1 ;; -e|--error-file) ERRORFILE="$2"; shift ;; -f|--auth-file) AUTHFILE="$2"; shift ;; -h|--help) SHOWHELP="yes" ;; -n|--server-num) SERVERNUM="$2"; shift ;; -l|--listen-tcp) LISTENTCP="" ;; -p|--xauth-protocol) XAUTHPROTO="$2"; shift ;; -s|--server-args) XVFBARGS="$2"; shift ;; -w|--wait) STARTWAIT="$2"; shift ;; --) shift; break ;; *) error "internal error; getopt permitted \"$1\" unexpectedly" exit 6 ;; esac shift done Starting on RHEL 8, however the X server (including Xvfb) does not listen on a TCP port by default, as it did up to RHEL 7. So it would be necessary to set LISTENTCP to "-listen tcp". The problem happens on RHEL 9 too, for the same reason.