"The main difference between these versions appears to be that the Hardy version links
to /usr/lib/libxcb-xlib.so.0 and /usr/lib/libxcb.so.1, and the older version does not." I'm guessing it has to do with that. I *just* did the Gutsy file copy today at one school, and it seemed to fix the problem all together with no ill effects (knocks on wood). Cheers, Jordan/Lns Todd O'Bryan wrote: > Does anyone have any idea what the bug might be and if it's still > present in intrepid? I'll try the fix on Monday and see what > happens... > > On Fri, Nov 14, 2008 at 10:05 AM, Kai Wollweber <[EMAIL PROTECTED]> wrote: > >> Am Freitag, den 14.11.2008, 09:44 -0500 schrieb Todd O'Bryan: >> >> >>> I'm trying to run BlueJ (http://www.bluej.org), a fairly modest Java >>> IDE for students. It runs fine on the servers, on my Ubuntu laptop and >>> desktop, but on the clients it's as slow as molasses. >>> >> Rhere is already a bug report at launchpad about this issue: >> >> https://bugs.launchpad.net/ubuntu/+source/ia32-libs/+bug/277069 >> >> >> I asked Juha in ltsp-discuss mailing-list and his answer gives us a >> workaround: >> >> >>> ----- "Kai Wollweber" <[EMAIL PROTECTED]> kirjoitti: >>> >>>> yesterday I recognized the problem of slow java applications on our >>>> >>> ltsp >>> >>>> clients. In our case the java program "geonext" is unuseable but >>>> importand for our school. I found your solution posted some weeks >>>> ago: >>>> >>>>> The sluggishness of some Java applications can be solved in Ubuntu >>>>> Hardy by replacing the /usr/lib32/libX11.so.6.2.0 file in Hardy >>>>> >>> with >>> >>>>> the version in Gutsy (presuming Firefox and Java are 32-bit >>>>> >>> versions, so >>> >>>>> they use 32-bit libraries). The main difference between these >>>>> >>> versions >>> >>>>> appears to be that the Hardy version links >>>>> >>> to /usr/lib/libxcb-xlib.so.0 >>> >>>>> and /usr/lib/libxcb.so.1, and the older version does not. Similar >>>>> >>> change >>> >>>>> may work as well with other LTSP distributions that are affected by >>>>> >>> this. >>> >>> >>>> 1.) How can a single file be replaced between different Ubuntu >>>> >>> versions? >>> >>> Simply replacing the file (with cp) should be enough, but in >>> case updates should happen to ia32-libs package that contains the >>> /usr/lib32/libX11.so.6.2.0 file, those updates will overwrite the >>> changed file. dpkg-divert can be used to solve this problem, it can >>> be used to divert file updates to another place (in this case, because >>> the file is a shared library, it should not be in the same directory, >>> otherwise ldconfig will link to the wrong file). >>> >>> You might want to test by simply installing the gutsy version of >>> ia32-libs package, it should work, but I don't recommend that as a >>> permanent solution (it will change many other libraries as well). >>> >>> >>>> 2.) Where can I get the file from Gutsy? >>>> >>> http://packages.ubuntu.com/gutsy-updates/amd64/ia32-libs/download >>> >>> You can unpack deb-archives with (IIRC): >>> >>> (mkdir tmp && cd tmp && ar x ../ia32-libs_2.1ubuntu4_amd64.deb && \ >>> tar -zxf data.tar.gz) >>> >>> You'll find the file there. >>> >>> >>>> 3.) Are there side effects that probably can affect the system? >>>> >>> Perhaps, but I'm not aware of any. >>> >>> >>>> 4.) Am I right that the file needs to be replaced in the ltsp >>>> >>> chroot? >>> >>> No, X-clients use this library, so it needs to be replaced in the ltsp >>> server environment, NOT in the image that is served to terminals. >>> >>> I hope this helps. >>> >>> Juha >>> >> -- >> edubuntu-users mailing list >> edubuntu-users@lists.ubuntu.com >> Modify settings or unsubscribe at: >> https://lists.ubuntu.com/mailman/listinfo/edubuntu-users >> >> > > -- Jordan Erickson Owner, Logical Networking Solutions http://www.logicalnetworking.net 707-636-5678 Latest LNS Blogs - http://blogs.logicalnetworking.net Intel and HP team up to roll out Green PCs for the enterprise Mozilla Thunderbird Add-on "Signature Switch" Will "Windows 7" be another Mojave Experiment? -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
