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01:31 | <Patrick__> Hello All! I've got an Edubuntu 12.04 server with LTSP which has been running for several years. We recently decided to add fat clients to the mix. Fat clients work fine with one exception. On dropdown menus, the whole menu is distorted (slanted) and is unusable. The rest of the screen is fine. I've seen it on drop down, tool tips, etc. This happens on fat clients and local apps. The machines are dell desktops with intel grap
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01:31 | We are up to date on patches and the intel drivers are current (for 12.04). Is there something else I can look into?
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10:52 | <vlt> Hello :-) I installed Ubuntu 16.04, ubuntu-mate-desktop, ltsp-server and then ran ltsp-buil-client. My thin client boots via PXE, shows the X login screen but when I enter my user name and the correct password I get the login sccreen again after a few seconds of black. After a wrong password I get a "wrong password" message.
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10:53 | I tried to solve this without success by installing the package ldm-server.
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10:53 | Any idea what to try next?
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11:05 | <vlt> Another problem: Since around v47 the Firefox browser becomes more and more unsuable. Scrolling down on a webpage results in 150 to 200 MB/s data transfer between the ltsp server and the client. This used to be ~500 kB/s.
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11:06 | After enabling the gfx.xrender setting (in FF) this drops to ~18 MB/s but this is still hardly acceptable.
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11:07 | What browser do you use in your setups?
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11:08 | Is there a Firefox fork that does this the old way (that used to just work for more than ten years!)?
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11:17 | vlt: You have to choose MATE session in the login screen settings ;-)
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11:17 | vlt: Thank you, this works!
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12:17 | <ogra_> vlt, do you have a desktop installed on your server ?
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12:18 | oh, yu got that part working already, sorry didnt see that on first sight
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13:02 | <vlt> ogra_: Hi!
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13:02 | Yes, that part works.
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13:03 | The people in #firefox and #gfx both say that they won’t “fix” this performance problem for remote X setups.
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13:04 | <vlt> On my search for a solution I just discovered xrdp.
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13:04 | My first test seems to work great.
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13:05 | <alkisg_web> You can find a few methods that use local caching and allow for faster scrolling
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13:05 | But you will never be able to fit uncompressed hd content in a gigabit network...
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13:05 | <ogra_> or use FF completely as local app
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13:05 | <vlt> How do I have to configure the LTSP login screen’s rdesktop backend to make that work?
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13:06 | <alkisg_web> So in today's world with 1920x1080x32bpp displays, with 30 fps, which result in 2 gbps bandwidth, thin clients are not the way to go
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13:06 | End result is ==> buy fat clients :)
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13:06 | !cheap-client
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13:06 | <ltsp> cheap-client: (#1) http://www.gearbest.com/tv-box-mini-pc/pp_343636.html, or (#2) https://www.aliexpress.com/store/product/New-arrival-Beelink-Pocket-Z83-Windows-10-Mini-PC-Z8300-64bit-1-84GHz-2GB-RAM-32GB/1871240_32640039781.html
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13:06 | <alkisg_web> With less than 100 euros each...
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13:06 | For rdp, there's an xfreerdp screen script
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13:06 | SCREEN_07="xfreerdp params"
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13:07 | Start with SCREEN_07=xterm
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13:07 | Then, inside that xterm, find the xfreerdp command that works for you
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13:07 | Then put it in lts.conf instead of that xterm
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13:07 | <vlt> alkisg_web: Thanks!
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13:07 | <alkisg_web> np
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13:08 | <vlt> Why "xfreerdp" instead of "rdesktop"?
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13:08 | <alkisg_web> Both are supported
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13:08 | You can do SCREEN_07="rdesktop params"
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13:08 | xfreerdp was more maintained at the time that screen script was written
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13:08 | rdesktop wasn't
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13:08 | <vlt> ok
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13:08 | <alkisg_web> I'm not sure if any of them is currently actively maintained...
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14:06 | <vlt> Hi! Any quick idea what ubuntu package I need to install into the chroot env if I don't get proper X resolution on some clients?
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15:21 | <vlt> There seems to be at least an xserver-xorg-video-sis pkg installed in the working Ubuntu 12.04 chroot env. It is not available on 16.04.
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15:34 | What magic removes the non-*.pub files from chroot's /etc/ssh/ when builing the image (or mounting it in the client)?
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15:41 | <vsuojanen> vlt: there is with ltspserver a file /etc/ltsp/ltsp-update-image.excludes
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15:47 | <alkisg_web> !epoptes | echo vlt:
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15:47 | <ltsp> vlt: epoptes: Epoptes is a computer lab administration and monitoring tool. It works on Ubuntu and Debian based labs with LTSP or non-LTSP servers, thin and fat clients, standalone workstations, NX clients etc. More info: http://www.epoptes.org
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15:47 | <alkisg_web> vlt, use that instead of ssh
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15:50 | <vsuojanen> vlt: i'm not so sure what you meant about the keys but also check /usr/sbin/ltsp-update-sshkeys. default only those keys known to server are exported. if this information is still valid for you
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15:53 | <vlt> I need an ssh connection just now to fix my video hardware issues.
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15:53 | Or at least try to.
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15:54 | On our current 12.04 install every thin client's vga works just fine up to full hd.
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15:54 | On 16.04 something seems to be missing :-/
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15:55 | <vsuojanen> is the ssh working now?
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15:55 | <vlt> vsuojanen: I installed it manually on one running client. Works (for now.)
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16:01 | <vsuojanen> isn't the ssh by default already installed for the clients
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16:15 | <alkisg_web> vlt, epoptes allows you to have root access and also be able to copy/paste stuff and run xinit etc
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16:16 | vlt, what's the output of this, on 12.04 and on 16.04:
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16:16 | lspci -nn -k | grep -A 2 VGA
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16:16 | This will show your chipset and the driver in use
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16:16 | sis is very under-maintained, and was almost left out for 14.04 and 16.04,
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16:17 | but some user sent a patch and it barely got in, but only for a few selected sis chipsets
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16:20 | !precise
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16:20 | <ltsp> I do not know about 'precise', but I do know about these similar topics: 'precise-i386'
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16:20 | <alkisg_web> !precise-i386
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16:20 | <ltsp> precise-i386: Ubuntu 12.04 compressed btrfs chroot to boot really old clients (non-pae, >=64MB RAM): http://ts.sch.gr/repo/livecd/images. You can find the image, a screenshot and a README there.
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16:23 | <vlt> alkisg_web: Thanks for your great help!
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16:25 | "Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter" "Kernel modules: sisfb" (running 1920x1080 just fine on 12.04).
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16:56 | <alkisg_web> vlt: is that on 12.04? What is the output on 16.04? We are interested in the "Driver in use:" line, if it exists
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16:57 | The main bug report is there, I think : https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-sis/+bug/1066464
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16:58 | They barely fixed a few of the segfaults for a few chipsets
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17:03 | <ogra_> well, sis was gone after 2012
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17:03 | (the driver that is)
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17:08 | <alkisg_web> http://packages.ubuntu.com/search?keywords=xserver-xorg-video-sis says that it's available for 14.04 but not for 16.04
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17:11 | And this is the answer from the ubuntu maintainer: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1625540
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17:12 | <ogra_> yeah ... i meant SiS was gone from the market in 2012 ... they stopped producing garphics chips
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17:12 | there might still have been some updates to the driver after that but it is dead in the water now
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17:18 | <alkisg_web> vlt, so, for those chipsets the latest chroot you can use that has the proper driver is 14.04.1. Or, you can build it yourself.
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17:41 | <vlt> alkisg_web: There's no "driver in use" line. Neither on 12.04 nor on 16.04.
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17:41 | I think for now I'll just continue using the 12.04 machine to fire up the clients with a SCREEN_07 = "xfreerdp ..." line.
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17:42 | Then I'll try a 14.04 setup because two more years of support (for the cleints).
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17:42 | *ie
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17:44 | Maybe then we should begin to phase out the >70 existing HP ThinClients :-D
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18:02 | <alkisg_web> vlt, then maybe you're missing the sis package in the chroot in 12.04
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18:02 | I don't think it comes preinstalled
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18:02 | <vlt> alkisg_web: In 12.04 there _is_ the sis package and everything wors prefectly fine.
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18:02 | <alkisg_web> Yes, replacing them with ultra slim fat clients would be a good idea...
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18:02 | vlt: a sis package without a sis line?
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18:02 | <vlt> ?
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18:03 | <alkisg_web> You said there was no "driver in use" line in 12.04 too
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18:03 | <vlt> alkisg_web: That's correct.
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18:03 | <alkisg_web> Then you weren't really using the driver
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18:03 | <vlt> alkisg_web: Maybe.
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18:03 | I'm trying to find out how this actually works.
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18:04 | And what causes our current 12.04 install to (just) work.
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18:04 | <alkisg_web> Put /var/log/Xorg.7.log from a 12.04 booted client to pastebin...
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18:04 | Btw, you can use the 12.04 chroot with a 16.04 server
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18:05 | Or a 14.04 chroot with a 16.04 server etc
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18:05 | <vlt> http://termbin.com/8jwv
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18:06 | alkisg_web: I know. But because of the poor firefox performance since a few months ago (ff v47 I guess) I need to find something else anyways.
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18:07 | xrdp on 16.04 seems to work great.
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18:07 | <alkisg_web> It loads sis alright... maybe you need | grep -A 3 VGA, if there are more lines in the output, to see the "driver in use"
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18:08 | Anyway, time to go; have fun with those clients ;)
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18:08 | bb!
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18:11 | <vlt> There's absolutely no such line (driver in use) in the VGA section.
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18:12 | ogra_: Can you spot _why_ full hd resolution works on our 12.04 system? Xorg.7.log:
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18:12 | http://termbin.com/8jwv
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18:31 | <ogra_> because it is the highest supported resolution of the attached CRT ?
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18:31 | no idea
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18:32 | 85.156] (II) SIS(0): Using EDID range info for horizontal sync
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18:32 | [ 85.156] (II) SIS(0): Using EDID range info for vertical refresh
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18:32 | [ 85.156] (II) SIS(0): Printing DDC gathered Modelines:
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18:32 | [ 85.156] (II) SIS(0): Modeline "1920x1080"x0.0 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync (67.5 kHz)
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18:33 | that is the modeline the monitors EDID provides as the highest resolution ... and since the SiS driver can handle this it will be used
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18:40 | <vlt> ogra_: Yeah but … why doesn’t this work when running 16.04 on that client machine?
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18:40 | Because the -sis pkg is not (available and) installed?
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18:41 | According to `lspci -nn -k` the -sis driver isn’t even used on 12.04 o_O
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18:41 | But I have no idea.
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18:42 | <ogra_> right, it most likely uses some generic framebuffer driver
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19:22 | <alkisg_web> vlt: I remembered that sisfb isn't loaded by default in ubuntu 12.04, because it wasn't faster than the generic framebuffer, right
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22:27 | <markit> hi, trying https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp, stopped BEFORE "dns issues" since I rebooted but I've no more network manager running, probably something conflicts and stops it to work. Better use a static interface setup?
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22:29 | I've a single interface configuration and dnsmasq as proxy only (I've put a # on dhcp-range=192.168.67...)
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22:30 | better have a look tomorrow, too tired now... see you :)
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