Thanks for the suggestion, and you're right, your summary is better. I tried the following (with various permutations).
sudo su -l -s /bin/bash www-data mkdir /tmp/chromium-home HOME=/tmp/chromium-home /usr/bin/timeout 60 chromium-browser --no- sandbox --headless --disable-gpu --window-size=2048,1448 --screenshot='/tmp/dummy.pdf' --user-data-dir=/tmp/chromium-home 'http://localhost/...' and this complains in a different way: Sorry, home directories outside of /home are not currently supported. See https://forum.snapcraft.io/t/11209 for details. Before the snap change was made, chromium would run headless without (I think) actually needing any writeable directory at all. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1849371 Title: [snap] Cannot run headless chromium as user www-data Status in chromium-browser package in Ubuntu: New Bug description: Since the move to snap, and upgrade to 19.10, I can no longer use headless-chromium to do automated conversions. The script, as currently run by Apache (user www-data) as a back-end server process is: /usr/bin/timeout 60 chromium-browser --no-sandbox --headless --disable-gpu --window-size=2048,1448 --screenshot='dummy.pdf' 'http://localhost/[...]' 2>&1 2>&1 This returns error 1, with: dconf-CRITICAL **: 19:41:17.958: unable to create directory '/var/www/.cache/dconf': Permission denied. dconf will not work properly. WARNING: cannot create user data directory: cannot create "/var/www/snap/chromium/899": mkdir /var/www/snap: permission denied Sorry, home directories outside of /home are not currently supported. See https://forum.snapcraft.io/t/11209 for details. So... how are we supposed to use scripted Chrome for headless work, when the snaps don't support it? This is a major blocker for me, as it completely destroys my ability to do any development work, because the build-toolchain for selftests relies on the ability of chrome to operate headless. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: chromium-browser 77.0.3865.120-0ubuntu1~snap1 ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1 Uname: Linux 5.3.0-19-generic x86_64 ApportVersion: 2.20.11-0ubuntu8 Architecture: amd64 CurrentDesktop: MATE DRM.card0-DP-1: enabled: disabled dpms: Off status: disconnected edid-base64: modes: DRM.card0-DP-2: enabled: disabled dpms: Off status: disconnected edid-base64: modes: DRM.card0-HDMI-A-1: enabled: enabled dpms: On status: connected edid-base64: AP///////wBMLToINDAxMCsWAQOANCB4KgHxoldSnycKUFS/74BxT4EAgUCBgJUAlQ+pQLMAKDyAoHCwI0AwIDYABkQhAAAaAAAA/QA4Sx5REQAKICAgICAgAAAA/ABTTVMyNEE0NTAKICAgAAAA/wBINE1DQTEzMzYyCiAgAQkCAQQAAjqA0HI4LUAQLEWABkQhAAAeAR0AclHQHiBuKFUABkQhAAAeAR0AvFLQHiC4KFVABkQhAAAejArQkCBAMSAMQFUABkQhAAAYjArQiiDgLRAQPpYABkQhAAAYAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0g== modes: 1920x1200 1920x1080 1600x1200 1680x1050 1280x1024 1280x1024 1440x900 1440x900 1280x960 1280x800 1152x864 1280x720 1280x720 1280x720 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 720x576 720x480 720x480 640x480 640x480 640x480 640x480 640x480 720x400 DRM.card0-HDMI-A-2: enabled: enabled dpms: On status: connected edid-base64: AP///////wAlpVNWODYxMB0NAQOBKR//6uWVpVhMlyYeUFS/7wCBgKlAMVlFWWFZgZkBAQEBSD9AMGKwMkAAwAMAmDIRAAAeAAAA/QA4VR9cEQAKICAgICAgAAAA/wBCSEZGS0I2MzAwMTY4AAAA/ABMMjBDTQogICAgICAgAMU= modes: 1600x1200 1280x1024 1280x1024 1280x1024 1024x768 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480 640x480 720x400 DRM.card0-HDMI-A-3: enabled: enabled dpms: On status: connected edid-base64: AP///////wAlpVNWNjIyMB0NAQOBKR//6uWVpVhMlyYeUFS/7wCBgKlAMVlFWWFZgZkBAQEBSD9AMGKwMkAAwAMAmDIRAAAeAAAA/QA4VR9cEQAKICAgICAgAAAA/wBCSEZGS0I2MzAwMjI2AAAA/ABMMjBDTQogICAgICAgAM8= modes: 1600x1200 1280x1024 1280x1024 1280x1024 1024x768 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480 640x480 720x400 Date: Tue Oct 22 19:48:51 2019 DiskUsage: Filesystem Type Size Used Avail Use% Mounted on /dev/sdb1 ext4 1.8T 491G 1.3T 29% /home tmpfs tmpfs 32G 927M 31G 3% /dev/shm /dev/sdb1 ext4 1.8T 491G 1.3T 29% /home InstallationDate: Installed on 2017-02-03 (991 days ago) InstallationMedia: Ubuntu-MATE 17.04 "Zesty Zapus" - Alpha amd64 (20170125) MachineType: System manufacturer System Product Name ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-19-generic root=UUID=6ef42be7-d431-4d0d-bc57-79f7a96980ef ro Snap.ChromeDriverVersion: ERROR: ld.so: object 'libgtk3-nocsd.so.0' from LD_PRELOAD cannot be preloaded (failed to map segment from shared object): ignored. ChromeDriver 77.0.3865.120 (416d6d8013e9adb6dd33b0c12e7614ff403d1a94-refs/branch-heads/3865@{#884}) Snap.ChromiumVersion: ERROR: ld.so: object 'libgtk3-nocsd.so.0' from LD_PRELOAD cannot be preloaded (failed to map segment from shared object): ignored. Chromium 77.0.3865.120 snap SourcePackage: chromium-browser UpgradeStatus: Upgraded to eoan on 2019-10-21 (0 days ago) dmi.bios.date: 05/16/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3805 dmi.board.asset.tag: Default string dmi.board.name: Z170 PRO GAMING dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3805:bd05/16/2018:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ170PROGAMING:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1849371/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
