Disse udgivelsesnoter dokumenterer kendte problemer med Ubuntu 8.10 og dets varianter.

Systemkrav

Minimumskravet for hukommelse i Ubuntu 8.10 er 256 MiB. (Bemærk at noget af din hukommelse evt. ikke er tilgængelig, fordi den bruges af dit grafikkort)

Med lige nøjagtig den påkrævede mængde hukommelse vil installationsprocessen tage længere tid end normalt, men den vil fuldføres, og systemet vil fungere og have en tilstrækkelig ydelse bagefter. Lav-hukommelsessystemer vil muligvis være i stand til at installere ved hjælp af "desktop"-cd'en ved at vælge "Installér Ubuntu" i bootmenuen, for på den måde at starte installationsprogrammet alene, i stedet for at starte hele skrivebordet ved at vælge "Prøv Ubuntu uden at ændre din computer".

Installation

Anbefalede pakker som installeres automatisk

I overensstemmelse med Debians pakkepolitik (som lyder: "Feltet "Anbefalede" bør indeholde en liste af pakker, som vil være installeret sammen med denne pakke under alt andet end usædvanlige omstændigheder") vil pakkehåndteringsystemet nu installere pakkerne i feltet "Anbefalede:" i andre installerede pakker, såvel som dem i "Afhænger:"-feltet automatisk. Hvis du ønsker at undgå dette for bestemte pakker, brug da "apt-get --no-install-recommends". Hvis du ønsker at gøre dette permanent så indstil APT::Install-Recommends til "false" i /etc/apt/apt.conf. Vær opmærksom på at dette kan resultere i manglende funktioner i visse programmer.

Langsom start ved "Vælg og installér software"-trinnet i installationsprogrammet i teksttilstand

Trinnet "Vælg og installér software" på installations-cd'en i teksttilstand kan syntes at gå i stå ved et enkeltciffer-procenttal. Dette gør sig specielt gældende for "netboot"-installationer, hvor der slet ikke vil være nogen statusbar-opdateringer mens der hentes pakker. Dette er på grund af en fejl i kommunikationen mellem installationsprogrammet og "apt-get", som blev opdaget for sent til at nå at rette det til Ubuntu 8.10: bug 290234.

Du kan finde ud af om installationsprogrammet gør fremskridt ved at trykke Alt-F4, for derved at skifte til en lognings-konsol, Alt-F1 bruges til at skifte tilbage til hoved-installationsprogrammet. (Hvis du installerer i QEMU eller KVM, så husk at trykke Ctrl-Alt, eller tryk på vinduet, for at få emulatoren til at tage fokusset før du trykker Alt-F4 idet det ellers vil føre til at emulatoren lukkes!)

oem-config kan ikke håndtere visse sprog korrekt

OEM-konfigurationsprogrammet for slutbrugere er ikke i stand til at håndtere valg af sprog, som ikke bruger ASCII eller ISO-8859-1-tegnsættene og dette vil føre til at brugeren vil ende med ikke at have nogen lokaliserings valgt efter valg af et af disse sprog (bug 290580). Listen over sprog som med sikkerhed virker, er som følger: Baskisk, Katalansk, Dansk, Hollandsk, Engelsk, Finsk, Fransk, Galicisk, Tysk, Indonesisk, Italiensk, Nordsamisk, Norsk Bogmål, Nynorsk, Portugisisk, Portugisisk (Brasilien), Spansk, Svensk, Tagalog.

For the meantime, OEMs affected by this problem may apply this patch (the scripts/tzsetup part) to the file /usr/lib/oem-config/timezone/tzsetup before running "Prepare for shipping to end user". We expect to release an update for this in due course, which will be installable via the normal packaging system at that same stage.

Hard disks potentially not shown when installing in Live CD mode

If a user browses a hard disk in Live CD mode before choosing to install, Ubiquity will not allow installation onto this disk because disks cannot be partitioned if they have busy (mounted) partitions. To use a mounted disk for installation, first unmount the drive before attempting to install.

Password limitation with ecryptfs

Users of the alternate/server installation who choose a password containing a "%" or a "-" will end up with an encrypted ~/Private directory that will not mount on reboot and subsequent logins. To fix this, affected users will need to do the following in the newly installed system:

1. Update ecryptfs-utils to at least version 53-1ubuntu12 (as soon as it becomes available as a package update)

2. Run: $ ecryptfs-setup-private --force

For more information on the bug and solution approach see bug #290445.

"Free software only" option installs restricted software

The "Free software only" option, available by pressing F6 twice on the first screen of the desktop CD/DVD, will install the restricted package linux-restricted-modules-2.6.27-7-generic in error. This can be worked around by removing the linux-restricted-modules-2.6.27-7-generic package after the installation completes.

Note that the "Free software only" option does not install any other restricted software.

For more information, please see Bug 290925

Upgrading

Users of Ubuntu 8.04 LTS can upgrade to Ubuntu 8.10 by a convenient automated process. Users of older Ubuntu releases need to upgrade to Ubuntu 8.04 LTS first, and then to 8.10. Complete instructions may be found at http://www.ubuntu.com/getubuntu/upgrading.

nVidia "legacy" video support

The 71 and 96 series of proprietary nVidia drivers, as provided by the nvidia-glx-legacy and nvidia-glx packages in Ubuntu 8.04 LTS, are not compatible with the X.Org included in Ubuntu 8.10. Users with the nVidia TNT, TNT2, TNT Ultra, GeForce, GeForce2, GeForce3, and GeForce4 chipsets are affected and will be transitioned on upgrade to the free nv driver instead. This driver does not support 3D acceleration.

Users of other nVidia chipsets that are supported by the 173 or 177 driver series will be transitioned to the nvidia-glx-173 or nvidia-glx-177 package instead. However, unlike drivers 96 and 71, drivers 173 and 177 are only compatible with CPUs that support SSE (e.g. Intel Pentium III, AMD Athlon XP or higher). Systems with older CPUs will also be transitioned to the nv driver on upgrade.

ATI "fglrx" video support

The ATI video driver in 8.10 drops support for video cards with r300 based chips (the Radeon 9500 - X600 Series of cards). If you have such a card, please use "Hardware Drivers" at System/Administration to disable it before the upgrade. Please see bug 284408 for more information

X.Org Input Devices

The X.Org configuration file (/etc/X11/xorg.conf) still has InputDevice entries for the mouse and keyboard, but they are ignored now because input-hotplug is used. The keyboard settings now come from /etc/default/console-setup; to change them please use sudo dpkg-reconfigure console-setup. After that, HAL and X need to be restarted (e.g., by rebooting your system).

X.Org evdev xmodmap incompatibility

The X keycodes generated with the new evdev input driver in X.Org 1.5 are not compatible with those generated in Ubuntu 8.04 LTS and before. If you have configured keybindings for your user with a ~/.Xmodmap file, you will need to convert or disable it by hand on upgrade.

UbuntuStudio real-time kernel support

The real-time kernel variant included in Ubuntu 8.10 does not include SMP support. Users of UbuntuStudio 8.04 who need real-time kernel support for dual-core, dual-processor, or more complex SMP configurations are advised not to upgrade to UbuntuStudio 8.10 at this time.

Toshiba laptop hotkey support

The tlsup kernel driver included in Linux 2.6.27 for support for Toshiba laptops is not compatible with the X.Org 1.5 event model, as a result of which hotkeys on these laptops are not usable with Ubuntu 8.10. This will be addressed in a post-release kernel update to reintroduce the toshiba_acpi driver.

Boot failures on systems with Intel D945 motherboards

Users have reported slower than normal detection of SATA hard drives on systems with Intel D945 motherboards in Ubuntu 8.10. This may cause the system to drop to a busybox initramfs shell on boot with a "Gave up waiting for root device." error. Wait a minute or two and then exit the initramfs shell by typing 'exit'. Booting should proceed normally. If it doesn't, wait a bit longer and try again. Once the system boots, edit /boot/grub/menu.lst and add rootdelay=90 to the kernel stanza for your current kernel. (Bug 290153).

Kubuntu KDE4 remix

In some cases an upgrade from Kubuntu 8.04 KDE 4 Remix to Kubuntu 8.10 will not update all applications. This will happen if the package kubuntu-desktop was removed. We strongly advise to ensure kubuntu-desktop, and if KDE 4 is installed also kubuntu-kde4-desktop, is installed before upgrading. If using the release upgrader, this will be handled automatically.

Cannot login after upgrade from Kubuntu 8.04 KDE 4 Remix

After an upgrade from Kubuntu 8.04 KDE 4 Remix, logging in will return directory to the login screen again. The x-session-manager alternative link is not correctly updated. Select "KDE" from the Session Menu before logging in and fix it with update-alternatives --set x-session-manager /usr/bin/startkde. (Bug 287488)

Support for ssl/blowfish-v0.2, version 2:0:1 not in encfs

Compatibility for this old algorithm was dropped in the 1.4.x version of encfs included in Ubuntu 8.10. Before upgrading, users of this algorithm will have to manually migrate their encfs volumes to a new one created with the new version. Alternatively, you may stay at an old version of encfs to be able to read the volumes.

Other known issues

System lock-ups with Intel 4965 wireless

The version of the iwlagn wireless driver for Intel 4965 wireless chipsets included in Linux kernel version 2.6.27 causes kernel panics when used with 802.11n or 802.11g networks. Users affected by this issue can install the linux-backports-modules-intrepid package, to install a newer version of this driver that corrects the bug. (Because the known fix requires a new version of the driver, it is not expected to be possible to include this fix in the main kernel package.)

Cannot reactivate Intel 3945/4965 wireless if booting with killswitch enabled

On laptops with Intel 3945 or Intel 4965 wireless chipsets and a killswitch for the wireless antenna, starting the system with the killswitch enabled (i.e., with wireless disabled) will prevent re-enabling the wireless by toggling the killswitch. As a workaround, users should boot the system with the killswitch disabled. A future kernel update is expected to address this issue.

Atheros ath5k wireless driver not enabled by default

The version of the ath5k driver for Atheros wireless devices included in Linux 2.6.27 interferes with the use of the madwifi driver for some wireless devices and as a result has been disabled by default. Many Atheros chipsets will work correctly with the madwifi driver, but some newer chipsets may not, and the madwifi driver may not work with WPA authentication. If you have an Atheros device that does not work with madwifi, you will want to install the linux-backports-modules-intrepid-generic package, which includes an updated version of the ath5k driver. While not installed by default, this linux-backports-modules-intrepid-generic package is included on the Ubuntu 8.10 CD and DVD images for ease of installation.

Limited support for Wacom tablet hotplugging

X.Org 1.5 includes support for autodetection of input devices, but for Wacom tablets this is currently limited to detecting the stylus only. Users of tablet devices who wish to use other input features will need to statically configure their input devices in /etc/X11/xorg.conf.

A complete discussion of this issue can be found in bug 282203.

iSCSI boot order

File systems hosted on iSCSI targets may not be mounted automatically at boot time, even if they have an entry in /etc/fstab, if a bridged or bonded Ethernet interface is required to reach the iSCSI target. As a work-around, you would have to restart the open-iscsi service and manually mount the file system in question after system boot, once the required network interface have been brought up. Systems equipped with a plain Ethernet interface are not affected.

See bug 227848.

Cannot mount more than one iSCSI target

Mounting multiple iSCSI targets at the same time is currently not supported. Systems configured to use more than one iSCSI targets should not be upgraded to Ubuntu 8.10.

For more information on the bug and solution approach see bug 289470.

Wireless doesn't work after suspend with ath_pci driver

Wireless devices that use the ath_pci kernel driver, such as the Atheros AR5212 wireless card, will be unable to connect to the network after using suspend and resume. To work around this issue, users can create a file /etc/pm/config.d/madwifi containing the single line:

   SUSPEND_MODULES=ath_pci

This will cause the module to be unloaded before suspend and reloaded on resume.

Systems installed from pre-release daily images may be missing some files

A bug present in pre-release daily desktop images caused some files related to language support to be missing from installed systems. Uninstalling and reinstalling the language support packages should correct this issue.

This issue does not affect users who installed using the Ubuntu 8.10 Beta or Release Candidate.

Kubuntu Bluetooth support

Bluetooth is not supported in Kubuntu 8.10 because KDE does not yet support the bluez 4.x stack required for compatibility with the kernel used in 8.10. A fix for this is being evaluated as a post-release update. (Bug 280997)

KNetworkManager cannot manage connections with static IPs

KNetworkManager in Kubuntu 8.10 sometimes fails with network connections that require static IP address configuration (bug 280762). Connections which use DHCP for IP address configuration are not affected by this problem.

Using usb-creator with 8.04.1 (Hardy) images

Persistence support in 8.04.1 images is broken. Creating a USB disk with usb-creator and an 8.04.1 image results in a busybox prompt if the persistence option is checked.

Only US wireless channels enabled by default on Intel 3945

The iwl3945 wireless driver defaults to the US regulatory domain for wireless, so wireless networks on channels forbidden by US regulations but permitted by European or Japanese regulations will not work out of the box. This affects IEEE 802.11b/g channels 12 (Europe and Japan), 13 (Europe and Japan), and 14 (Japan only), as well as all 802.11a channels. (Some other wireless drivers may be affected; this is the only one we are sure of so far.)

To work around this, add the following line to the /etc/modprobe.d/options file if you use this driver and need to use European wireless channels:

options cfg80211 ieee80211_regdom=EU

Alternatively, add the following line if you use this driver and need to use Japanese wireless channels:

options cfg80211 ieee80211_regdom=JP

Cyrus SASL database created with incorrect permissions

Cyrus SASL creates the database for its sasldb2 plugin with incorrect permissions. As a result, other users of this database, such as cyrus-imap, will not be able to access it and will fail. This does not affect upgrades of existing databases from a previous release. The workaround is to manually change the group of /etc/sasldb2 to sasl:

$ sudo chgrp sasl /etc/sasldb2

See bug 288478 for details.

Access to Java Runtime Environment

To use Java programs, you need to install the openjdk-6-jre package whch contains the Java Runtime Environment. If you want to develop Java programs, then install the openjdk-6-jdk package. To work with Java applets in the Firefox browser and compatible browsers on x86 architectures, you need to install the icedtea6-plugin package by hand.

The JRE and the Java applet plugin are installed by default in the live session on the Ubuntu DVD, but are not currently installed elsewhere due to space constraints. However, a missing feature in the installer means that these packages will not be installed when installing using the graphical installer on the DVD, so you will need to install them afterwards.

CD eject problems

After ejecting a CD tray containing a disc, the tray will be immediately retracted, making it difficult to remove the disc (bug 283316). This can be worked around by pressing the eject button again before the disc is fully mounted, after which it will stay open. We expect to fix this in a post-release update.