>> - Ubuntu 16.04 LTS i686 > Are you really using 32bit? Yes $ uname -a Linux x2go-i686-vm 4.4.0-79-generic #100-Ubuntu SMP Wed May 17 19:57:27 UTC 2017 i686 i686 i686 GNU/Linux
I'm running all tests on a amd64 machine too, I get the same results $ uname -a Linux x2go-amd64-vm 4.4.0-79-generic #100-Ubuntu SMP Wed May 17 19:58:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux >> - nx set to link=3Dlan, pack=3Dadaptive-9, the rest as default > Are you also _running_ on a LAN? Yes, 1Gbps link 1 hop away from the server for testing purposes. Reduced it to ADSL as a test, artifacts remain. >> acceleration disabled and rendering by cairo. > How did you disable hw rendering? Options -> Advanced -> uncheck "Use hardware acceleration..." Enabling it doesn't make a difference, the artifacts remain. I'm running VMs without any GPU support. For cairo in about:config gfx.canvas.azure.backends cairo gfx.content.azure.backends cairo gfx.xrender.enabled true > Have you tried the firefox (53.0.2 or newer, not an ESR version) that > Ubuntu is delivering with the distro? Is it also happening with that > version? Yes, current Firefox from Ubuntu repos and the latest 54.0b13 from Mozilla's build have the same issue. > I suggest to clear the caches on server and client and then retry with > a new session. Caches are in ~/.x2go. No improvement. > Please provide some screenshots about:mozilla in Firefox 45.9.0esr https://abload.de/img/ff-45esr-html1js43.png about:mozilla in Firefox 52.1.2esr https://abload.de/img/ff-52esr-htmllns35.png Differing quality between adjacent elements in Firefox 52.1.2esr https://abload.de/img/differing-quality-icow4s09.png Artifacts in the chrome seem to disappear when I resize the window and it has to be redrawn. They reappear after I hover on them (ie, after the backgound changes). > as well as some URLs your are seeing the problem with. A good universal reference is about:mozilla. Artifacts in the chrome are noticeable in the "+" to create a new tab, for example. > Also I'd like to know the kind of session you are running Im running Firefox as single application, for instance: /opt/firefox52esr/firefox -P > Is your distro uptodate? Yes, installed from 16.04.2 Ubuntu ISOs, just updated/upgraded. > In a broken session please post the options file from the server side > (~/.x2go/C-*/options). Firefox 45.9.0esr nx/nx,link=3Dlan,pack=3Dadaptive-9,limit=3D0,root=3D/tmp/.x2go-test/C-tes= t-50-1497443353_stRfirefox_dp32,cache=3D8M,images=3D32M,type=3Dunix-kde-d= epth_32,id=3Dtest-50-1497443353_stRfirefox_dp32,cookie=3D11afc8e451487a98= e241b19d22df6e03,errors=3D/tmp/.x2go-test/C-test-50-1497443353_stRfirefox= _dp32/session.log,kbtype=3Dnull/null,geometry=3D800x600,resize=3D1,fullsc= reen=3D0,accept=3Dlocalhost,listen=3D32416,clipboard=3Dboth,client=3Dlinu= x,menu=3D0,state=3D/home/test/.x2go/C-test-50-1497443353_stRfirefox_dp32/= state:50 Firefox 52.1.2esr nx/nx,link=3Dlan,pack=3Dadaptive-9,limit=3D0,root=3D/tmp/.x2go-test/C-tes= t-50-1497444001_stRfirefox_dp32,cache=3D8M,images=3D32M,type=3Dunix-kde-d= epth_32,id=3Dtest-50-1497444001_stRfirefox_dp32,cookie=3D531a4eb25bde9f45= deeded697cc18b62,errors=3D/tmp/.x2go-test/C-test-50-1497444001_stRfirefox= _dp32/session.log,kbtype=3Dnull/null,geometry=3D800x600,resize=3D1,fullsc= reen=3D0,accept=3Dlocalhost,listen=3D61183,clipboard=3Dboth,client=3Dlinu= x,menu=3D0,state=3D/home/test/.x2go/C-test-50-1497444001_stRfirefox_dp32/= state:50 --- A reproducible scenario: - Create a new VM. 4 cores, 4GB memory, no video memory, 25GB storage, 1Gbps link - Install Ubuntu from http://de.releases.ubuntu.com/16.04.2/ubuntu-16.04.2-desktop-i386.iso -- Don't install non-free components - Update/upgrade system - Install X2Go on server following the instructions in http://wiki.x2go.org/doku.php/doc:installation:x2goserver - Install latest X2Go client on Windows 7 machine - Download Firefox 45esr http://ftp.mozilla.org/pub/firefox/releases/45.9.0esr/linux-i686/en-GB/fi= refox-45.9.0esr.tar.bz2 -- Untar to /opt/firefox45esr - Download Firefox 52esr http://ftp.mozilla.org/pub/firefox/releases/52.2.0esr/linux-i686/en-GB/fi= refox-52.2.0esr.tar.bz2 -- Untar to /opt/firefox52esr - Create a new session in X2Go client: link=3DLAN, pack=3Dadaptive-9, printing disabled, no port forwarding for audio - Launch /opt/firefox45esr/firefox -P -- Create a new profile -- Set configuration to cairo, enable xrender, disable hardware accelerat= ion -- Restart Firefox, check image quality in about:mozilla - Launch /opt/firefox52esr/firefox -P -- Create a new profile -- Set configuration to cairo, enable xrender, disable hardware accelerat= ion -- Restart Firefox, check image quality in about:mozilla The non-free components can be installed later on with the package ubuntu-restricted-extras, but it doesn't make a difference.
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