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