There's already a bug report #277069. Should I file another one? On Tue, Nov 18, 2008 at 11:07 PM, Jordan Erickson <[EMAIL PROTECTED]> wrote: > It would greatly help if you filed a bug report for this. Most likely the > Ubuntu Java people have no idea about this (from my experience, most > non-ltsp devs have little/no knowledge of ltsp in the first place). > > Cheers, > Jordan/Lns > > > Todd O'Bryan wrote: >> >> OK. I tried the workaround and it did indeed fix my Java problems. >> Hopefully a fix will appear soon in the real update channel. >> >> On Fri, Nov 14, 2008 at 6:40 PM, Todd O'Bryan <[EMAIL PROTECTED]> >> wrote: >> >>> >>> Yeah. I just wondered if anyone knew what the XCB bug might be or >>> whether the XCB devs were working on it. :-) >>> >>> On Fri, Nov 14, 2008 at 6:17 PM, Jordan Erickson >>> <[EMAIL PROTECTED]> wrote: >>> >>>> >>>> "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 >>>>>> [email protected] >>>>>> 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? >>>> >>>> >>>> >> >> > >
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