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Queste note di rilascio illustrano i problemi noti con Ubuntu 8.10 «Intrepid Ibex» e le altre varianti.
Requisiti di sistema
La quantità minima di memoria richiesta per Ubuntu 8.10 «Intrepid Ibex» è 256 MiB (notare che parte della memoria del sistema potrebbe essere non disponibile se utilizzata dalla scheda video).
Se è disponibile solo la quantità minima di memoria richiesta, sarà necessario più tempo del normale per il processo di installazione; l'installazione comunque potrà essere ugualmente completata e, una volta installato, il sistema potrà essere eseguito in modo adeguato. Sistemi con poca memoria possono utilizzare il CD desktop per l'installazione selezionando dal menù di avvio la voce "Installa Ubuntu", in modo da eseguire solo il programma di installazione, invece che mandare in esecuzione l'intero ambiente grafico selezionando la voce "Prova Ubuntu senza modificare il computer".
Installazione
Pacchetti "recommended" installati in modo predefinito
In accordo con il "Debian Policy Manual" (che enuncia "il campo 'Recommends' dovrebbe elencare i pacchetti che dovrebbero essere presenti nel computer assieme al pacchetto corrente in tutte le installazioni tranne quelle non usuali"), il sistema di gestione dei pacchetti ora installa in modo predefinito i pacchetti elencati nel campo Recommends: così come avviene per i pacchetti nell'elenco Depends:.
Per evitare questo comportamento per un singolo pacchetto, usare il comando:
apt-get --no-install-recommends nome_pacchetto
Per evitare questo comportamento per tutti i pacchetti in modo permanente, inserire la riga:
APT::Install-Recommends "false"
nel il file /etc/apt/apt.conf.
Notare che ciò potrebbe avere come conseguenza l'assenza di funzionalità in alcuni pacchetti.
Slow start to "Select and install software" step in text-mode installer
The "Select and install software" step in the text-mode install CD may appear to hang at a low single-digit percentage. This is particularly the case for netboot installations, where there will be no progress bar updates at all while downloading packages. This is due to a fault in the interaction between the installer and apt-get, which was diagnosed too late to fix for Ubuntu 8.10: bug 290234.
You can find out whether the installer is making progress by pressing Alt-F4 to switch to the logging console; Alt-F1 switches back to the main installer. (If you are installing in QEMU or KVM, be careful to press Ctrl+Alt or click in the window to have the emulator grab focus before pressing Alt-F4, as otherwise this will close the emulator!)
oem-config fails to handle some languages properly
The OEM end-user configuration tool mishandles selection of languages that do not use the ASCII or ISO-8859-1 character sets, and the end user will end up with no localisation set after selecting such languages (bug 290580). The list of known-good languages is as follows: Basque, Catalan, Danish, Dutch, English, Finnish, French, Galician, German, Indonesian, Italian, Northern Sami, Norwegian Bokmål, Norwegian Nynorsk, Portuguese, Portuguese (Brazil), Spanish, Swedish, 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 disk(s) potentially not shown when installing in Live CD mode
If a user browses a hard disk(s) in Live CD mode before choosing to install, Ubiquity will not allow installation onto this disk(s). It is necessary to exclude these, as you cannot apply partitioning to any disk with 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:
- Update ecryptfs-utils to at least version 53-1ubuntu12 (as soon as it becomes available as a package update)
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. 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
Avanzamento di versione
Gli utenti di Ubuntu 8.04 LTS posso eseguire l'avanzamento a Ubuntu 8.10 tramite un semplice processo automatico. Gli utenti di rilasci più vecchi dovranno prima effettuare l'avanzamento a Ubuntu 8.04 LTS e solo successivamente alla 8.10. Istruzioni complete possono essere trovate presso questa pagina
Supporto video nVidia "legacy"
Le serie 71 e 96 dei driver proprietari nVidia, forniti dai pacchetti nvidia-glx-legacy e nvidia-glx in Ubuntu 8.04 LTS, non sono compatibili con la versione di X.Org inclusa in Ubuntu 8.10. I possessori di schede video con chipset nVidia TNT, TNT2, TNT Ultra, GeForce, GeForce2, GeForce3, e GeForce4 subiranno gli effetti di tale incompatibilità e durante l'avanzamento verrà eseguita la transizione al driver libero nv. Tale driver però non supporta l'accelerazione 3D.
Per possessori di schede video con altri chipset nVidia che sono supportati dalle serie 173 e 177 del driver verrà eseguita la transizione ai pacchetti nvidia-glx-173 o nvidia-glx-177. Però, a differenza dei driver 96 e 71, i driver 173 e 177 sono compatibili solo con processori che supportano le istruzioni SSE (per esempio Intel Pentium III, AMD Athlon XP o superiori). Per sistemi con processori più vecchi verrà eseguita durante l'avanzamento la transizione al driver nv.
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
Device di input in X.Org
Nel file di configurazione di X.Org (/etc/X11/xorg.conf) sono ancora presenti campi InputDevice per il mouse e la tastiera; tali campi sono però ignorati poiché ora viene utilizzato input-hotplug.
Le impostazioni della tastiera sono ora salvate nel file /etc/default/console-setup; per cambiarle usare il comando:
sudo dpkg-reconfigure console-setup
Dopo un cambiamento di tali impostazioni è necessario riavviare i demoni HAL e X.
Incompatibilità evdev xmodmap di X.Org
I keycode X generati con il nuovo driver di input evdev di X.Org 1.5 non sono compatibili con quelli generati in Ubuntu 8.04 LTS e precedenti. Se sono state configurate delle associazioni di tasti tramite un file ~/.Xmodmap, è necessario convertirle o disabilitarle durante l'avanzamento.
Supporto kernel real-time per UbuntuStudio
La variante real-time del kernel incluso in Ubuntu 8.10 non include il supporto SMP. Gli utenti di UbuntuStudio 8.04 che necessitano di un kernel real-time con supporto dual-core, dual-processor o con configurazioni SMP più complesse, sono invitati attualmente a non eseguire l'avanzamento a UbuntuStudio 8.10.
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
If this reported failure occurs, the system will drop to a busybox initramfs shell 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 Hardy Heron KDE 4 Remix to Intrepid Ibex isn't done for 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. The release upgrader will ensure this automatically, but it is important for manual upgrades.
Support for ssl/blowfish-v0.2, version 2:0:1 not in encfs
Backward compatibility for this old algorithm was dropped in the 1.4.x version of encfs included in Intrepid. 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.
Altri problemi noti
Blocchi del sistema con chip wireless Intel 4965
La versione del driver wireless iwlang per il chipset Intel 4965 incluso nel kernel Linux versione 2.6.27 causa una serie di kernel panic quando usato con reti di tipo 802.11n o 802.11g. Gli utenti affetti da questo problema possono installare il pacchetto linux-backports-modules-intrepid: il pacchetto fornisce una versione più recente del driver che corregge il bug (poiché la correzione nota richiede una nuova versione del driver, non è possibile includerla nel pacchetto principale del kernel).
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.
Ordine di avvio iSCSI
I file system ospitati su dispositivi iSCSI potrebbero non venir montati automaticamente all'avvio del sistema, anche se per essi è presente una voce in /etc/fstab, nel caso in cui è richiesta un'interfaccia Ethernet "bridged" o "bonded" per raggiungere il dispositivo iSCSI. Per aggirare il problema, è necessario riavviare il servizio open-scsi e montare manualmente il file system in questione dopo l'avvio, una volta che l'interfaccia di rete richiesta è ormai attiva.
I sistemi dotati di una normale interfaccia Ethernet non sono affetti da questo problema.
Per maggiori informazioni, consultare il bug #227848.
Cannot support mounting multiple iSCSI targets at the same time
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 Intrepid.
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
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.
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)
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 a 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.
Riferimenti
Documento originale: potrebbe contenere informazioni più aggiornate di quanto qui riportato.