# How/where do you specify the Xvfb config parameters when running tests using the Katalon Github Action on a Linux runner? **URL:** \ **Category:** Integrations\ **Tags:** integrations, katalon-studio\ **Created:** [April 1, 2022, 1:42pm UTC](https://forum.katalon.com/t/how-where-do-you-specify-the-xvfb-config-parameters-when-running-tests-using-the-katalon-github-action-on-a-linux-runner/63906 "2022-04-01T13:42:05Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![shashi.prabhakar](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/shashi.prabhakar/32/16104_2.png) [@shashi.prabhakar](https://forum.katalon.com/u/shashi.prabhakar)\ **Post date:** [April 1, 2022, 1:42pm UTC](https://forum.katalon.com/t/how-where-do-you-specify-the-xvfb-config-parameters-when-running-tests-using-the-katalon-github-action-on-a-linux-runner/63906/1 "2022-04-01T13:42:06Z")
Can someone point me to/provide sample Github Actions workflow code that shows how/where the Xfvb config parameters (documented in [https://docs.katalon.com/katalon-studio/docs/common-configuration.html#command-arguments](https://docs.katalon.com/katalon-studio/docs/common-configuration.html#command-arguments)) should be specified when running a test using the Katalon Github Action integration? All examples of Github actions I have seen in documentation and elsewhere use a Windows runner - but I need to use a Linux runner for some other reasons related to our application. I have tried the following ways to specify these parameters - but neither worked. Method 1: Add a step to configure Xfvb on the runner before the uses statement for the Katalon Github Action: ``` - name: Configure Xvfb on runner VM (required for KRE execution on Linux) #if: runner.os == 'Linux' run: | sudo apt-get install -y xvfb libxkbcommon-x11-0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-xinerama0 libxcb-xinput0 libxcb-xfixes0 # start xvfb in the background sudo /usr/bin/Xvfb :0 -screen 0 1280x1024x24 & #run: xvfb-run -a -n 0 -s "-screen 0 1024x768x24" & - name: Run Katalon API tests against AKS uses: katalon-studio/katalon-studio-github-action@v2.2 with: version: '8.2.5' projectPath: '${{ github.workspace }}/src/NPG.Server.KatalonFunctionalTests/NPG.Server.FunctionalTests.prj' args: ' -retry=0 -testSuitePath="Test Suites/Functional Test" -browserType="Web Service" -executionProfile="default" -apiKey="${{secrets.KATALON_API_KEY}}" --config -proxy.auth.option=NO_PROXY -proxy.system.option=NO_PROXY -proxy.system.applyToDesiredCapabilities=true' ``` Result: Xfvb install and configuration appears to be successful (although I am not seeing anything in the log to confirm that configuration was actually done). But the katalonc command to run the test suite still fails with the same error as before I added the step. Logs shown below. Method 2: Added the config parameters ($X11 DISPLAY and $Xvfb-run) in the args parameter of the call to the action per the instructions in the aforementioned article: ``` - name: Run Katalon API tests against AKS uses: katalon-studio/katalon-studio-github-action@v2.2 with: version: '8.2.5' projectPath: '${{ github.workspace }}/src/NPG.Server.HSM.Service.KatalonFunctionalTests/NPG.Server.HSM.Service.KatalonFunctionalTests.prj' args: ' -retry=0 -testSuitePath="Test Suites/HSM Microservice Functional Tests - AKS" -browserType="Web Service" -executionProfile="default" -apiKey="${{secrets.KATALON_API_KEY}}" $X11 DISPLAY=":0" $Xvfb-run="-a -n 0 -s "-screen 0 1024x768x24"" --config -proxy.auth.option=NO_PROXY -proxy.system.option=NO_PROXY -proxy.system.applyToDesiredCapabilities=true' ``` Result: Step fails with the same error message as without the config parameters (log identical to the one shown below except for dates/times). Note: Original Failure of the test (with log almost identical to what is shown below) before the above config changes was attributed to lack of Xfvb configuration - see [API test against web service running in AKS fails with 'Connection refused' and lots of 'Could not resolve module' errors in the Katalon log when executed from Github Actions workflow - #2 by duyluong](http://forum.katalon.com/t/api-test-against-web-service-running-in-aks-fails-with-connection-refused-and-lots-of-could-not-resolve-module-errors-in-the-katalon-log-when-executed-from-github-actions-workflow/63622/2). **Log for step using the Katalon Github Action (original and for both methods).** ``` [2022-04-01T12:06:38.563] [INFO] katalon - GET https://raw.githubusercontent.com/katalon-studio/katalon-studio/master/releases.json 200. [7](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:7)[2022-04-01T12:06:38.577] [INFO] katalon - Download Katalon Studio 8.2.5 to /home/runner/.katalon/8.2.5. [8](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:8)[2022-04-01T12:06:38.578] [INFO] katalon - Downloading from https://download.katalon.com/8.2.5/Katalon_Studio_Engine_Linux_64-8.2.5.tar.gz. It may take a few minutes. [9](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:9)[2022-04-01T12:06:38.579] [INFO] katalon - Downloading from https://download.katalon.com/8.2.5/Katalon_Studio_Engine_Linux_64-8.2.5.tar.gz to /tmp/tmp-1614-QieyogKHujIq. [10](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:10) [11](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:11)[2022-04-01T12:06:47.006] [INFO] katalon - Finished downloading. [12](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:12)[2022-04-01T12:06:47.008] [INFO] katalon - Decompressing the /tmp/tmp-1614-QieyogKHujIq into /home/runner/.katalon/8.2.5. [13](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:13)Katalon Folder: /home/runner/.katalon/8.2.5 [14](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:14)Katalon Executable File: /home/runner/.katalon/8.2.5/Katalon_Studio_Engine_Linux_64-8.2.5/katalonc [15](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:15)Execute Katalon Studio: /home/runner/.katalon/8.2.5/Katalon_Studio_Engine_Linux_64-8.2.5/katalonc -noSplash -runMode="console" -projectPath="/home/runner/work/test/test/src/KatalonFunctionalTests/KatalonFunctionalTests.prj" -retry=0 -testSuitePath="Test Suites/Functional Tests" -browserType="Web Service" -executionProfile="default" -apiKey="***" $X11 DISPLAY=":0" $Xvfb-run="-a -n 0 -s "-screen 0 1024x768x24"" --config -proxy.auth.option=NO_PROXY -proxy.system.option=NO_PROXY -proxy.system.applyToDesiredCapabilities=true [16](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:16)Execute "sh -c /home/runner/.katalon/8.2.5/Katalon_Studio_Engine_Linux_64-8.2.5/katalonc -noSplash -runMode="console" -projectPath="/home/runner/work/test/test/src/KatalonFunctionalTests/KatalonFunctionalTests.prj" -retry=0 -testSuitePath="Test Suites/Functional Tests" -browserType="Web Service" -executionProfile="default" -apiKey="***" $X11 DISPLAY=":0" $Xvfb-run="-a -n 0 -s "-screen 0 1024x768x24"" --config -proxy.auth.option=NO_PROXY -proxy.system.option=NO_PROXY -proxy.system.applyToDesiredCapabilities=true" in /tmp/tmp-1614-tvaU6bBjP50o. [17](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:17)Unable to init server: Could not connect: Connection refused [18](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:18)Katalonc: Cannot open display: [19](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:19) [20](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:20)Katalonc: [21](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:21)An error has occurred. See the log file [22](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:22)/home/runner/.katalon/8.2.5/Katalon_Studio_Engine_Linux_64-8.2.5/configuration/1648814821956.log. [23](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:23) [24](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:24)Exit code: 13. [25](https://github.com/test/runs/5787470499?check_suite_focus=true#step:3:25)Error: Exit code 13. ``` **Log for step to install and configure Xfvb on Github Actions Linux runner (Method 1)** ``` Reading package lists... Building dependency tree... Reading state information... libxcb-xfixes0 is already the newest version (1.14-2). libxcb-xfixes0 set to manually installed. xvfb is already the newest version (2:1.20.13-1ubuntu1~20.04.2). The following NEW packages will be installed: libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-util1 libxcb-xinerama0 libxcb-xinput0 libxcb-xkb1 libxkbcommon-x11-0 0 upgraded, 10 newly installed, 0 to remove and 17 not upgraded. Need to get 147 kB of archives. After this operation, 793 kB of additional disk space will be used. Get:1 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-randr0 amd64 1.14-2 [16.3 kB] Get:2 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-xinerama0 amd64 1.14-2 [5260 B] Get:3 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-xinput0 amd64 1.14-2 [29.3 kB] Get:4 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-xkb1 amd64 1.14-2 [29.6 kB] Get:5 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxkbcommon-x11-0 amd64 0.10.0-1 [13.4 kB] Get:6 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-icccm4 amd64 0.4.1-1.1 [10.8 kB] Get:7 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-util1 amd64 0.4.0-0ubuntu3 [11.2 kB] Get:8 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-image0 amd64 0.4.0-1build1 [12.3 kB] Get:9 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-keysyms1 amd64 0.4.0-1build1 [8452 B] Get:10 http://azure.archive.ubuntu.com/ubuntu focal/main amd64 libxcb-render-util0 amd64 0.3.9-1build1 [9912 B] Fetched 147 kB in 0s (842 kB/s) Selecting previously unselected package libxcb-randr0:amd64. (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 241056 files and directories currently installed.) Preparing to unpack .../0-libxcb-randr0_1.14-2_amd64.deb ... Unpacking libxcb-randr0:amd64 (1.14-2) ... Selecting previously unselected package libxcb-xinerama0:amd64. Preparing to unpack .../1-libxcb-xinerama0_1.14-2_amd64.deb ... Unpacking libxcb-xinerama0:amd64 (1.14-2) ... Selecting previously unselected package libxcb-xinput0:amd64. Preparing to unpack .../2-libxcb-xinput0_1.14-2_amd64.deb ... Unpacking libxcb-xinput0:amd64 (1.14-2) ... Selecting previously unselected package libxcb-xkb1:amd64. Preparing to unpack .../3-libxcb-xkb1_1.14-2_amd64.deb ... Unpacking libxcb-xkb1:amd64 (1.14-2) ... Selecting previously unselected package libxkbcommon-x11-0:amd64. Preparing to unpack .../4-libxkbcommon-x11-0_0.10.0-1_amd64.deb ... Unpacking libxkbcommon-x11-0:amd64 (0.10.0-1) ... Selecting previously unselected package libxcb-icccm4:amd64. Preparing to unpack .../5-libxcb-icccm4_0.4.1-1.1_amd64.deb ... Unpacking libxcb-icccm4:amd64 (0.4.1-1.1) ... Selecting previously unselected package libxcb-util1:amd64. Preparing to unpack .../6-libxcb-util1_0.4.0-0ubuntu3_amd64.deb ... Unpacking libxcb-util1:amd64 (0.4.0-0ubuntu3) ... Selecting previously unselected package libxcb-image0:amd64. Preparing to unpack .../7-libxcb-image0_0.4.0-1build1_amd64.deb ... Unpacking libxcb-image0:amd64 (0.4.0-1build1) ... Selecting previously unselected package libxcb-keysyms1:amd64. Preparing to unpack .../8-libxcb-keysyms1_0.4.0-1build1_amd64.deb ... Unpacking libxcb-keysyms1:amd64 (0.4.0-1build1) ... Selecting previously unselected package libxcb-render-util0:amd64. Preparing to unpack .../9-libxcb-render-util0_0.3.9-1build1_amd64.deb ... Unpacking libxcb-render-util0:amd64 (0.3.9-1build1) ... Setting up libxcb-xinput0:amd64 (1.14-2) ... Setting up libxcb-keysyms1:amd64 (0.4.0-1build1) ... Setting up libxcb-render-util0:amd64 (0.3.9-1build1) ... Setting up libxcb-icccm4:amd64 (0.4.1-1.1) ... Setting up libxcb-util1:amd64 (0.4.0-0ubuntu3) ... Setting up libxcb-xkb1:amd64 (1.14-2) ... Setting up libxcb-image0:amd64 (0.4.0-1build1) ... Setting up libxcb-xinerama0:amd64 (1.14-2) ... Setting up libxkbcommon-x11-0:amd64 (0.10.0-1) ... Setting up libxcb-randr0:amd64 (1.14-2) ... Processing triggers for libc-bin (2.31-0ubuntu9.2) ... ```