Horizontally divided screen on/after installation (until login and during shutdown process)

[Janet]

I tried installing several version of the Kubuntu Lucid daily build but I always get a horizontally divided screen on my notebook, so it's not usable. Never had this problem with Karmic and versions before.

My notebook specs:

CPU Info Intel Celeron M 512 KB cache flags( sse2 ) clocked at [ 1300.193 MHz ]
Videocard Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter X.Org 1.6.4 [ 1280x800@60.0hz ]
Network cards Intersil ISL3886 [Prism Javelin/Prism Xbow]
                Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet, at port: d800
Memory 235.6/465.7MB | HDD FUJITSU MHV2080A Size 80GB (25%used)

Screenshot: http://www.fotos-hochladen.net/lucidsplitscreenfhny563d.jpg

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Oneiric status (in Ubuntu not Kubuntu): This only affects the boot and shutdown/restart/etc processes, ie when plymouth is in use.

[Janet (bugzilla-kerridis)]

The hardware info is gathered from a parallel Kubuntu Karmic installation so don't bother about that X.Org 1.6.4 part.

[Philip Muškovac (yofel)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage. I have classified this bug as a bug in xserver-xorg-video-sis.

When reporting bugs in the future please use apport, either via the appropriate application's "Help -> Report a Problem" menu or using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Bryce Harrington (bryce)]

Hi bugzilla-kerridis,

Please attach the output of `lspci -vvnn` and `dmesg`, and attach your /var/log/Xorg.0.log (and maybe Xorg.0.log.old) file from after reproducing this issue. If you're using a custom /etc/X11/xorg.conf please attach that as well.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Janet (bugzilla-kerridis)]

With Kubuntu Lucid Alpha 3 (i386) the divided screen only is shown out of X. That means the bootsplash (of the desktop live CD and installation) is horizontally divided and when I'm on a virtual console (which also affects the alternate installer as shown in the screenshot above). The login screen of KDM and the KDE desktop is ok. So I guess it's not xserver-xorg-video-sis?

[Janet (bugzilla-kerridis)]

here's lspci --vvnn output from alpha3 desktop live cd

[Janet (bugzilla-kerridis)]

and dmesg

[Daniel Uranga (fersbery-77)]

Your screen looks like this: http://launchpadlibrarian.net/27107413/DSC00298.JPG ? Im having that problem when using community provided sisimedia driver. No oficial driver is provided on Jaunty.

[Janet (bugzilla-kerridis)]

@#7: Not really like that. The screen isn't split in the middle but in the upper quarter which shows the bottom squeezed. And in X/KDE everything looks fine. It's just out of X: bootsplash, alternate installer, virtual consoles. It also does happen in Beta1.

[Janet (bugzilla-kerridis)]

Is it now complete?

[Janet (bugzilla-kerridis)]

I get a normal non-divided screen when I add "sisfb" to /etc/modules and "video=sisfb" to /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT. May I propose to automatically use/add this when a SiS graphics card is detected - beginning with the alternate installer?

[papukaija (papukaija)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 557756, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.