These release notes document known issues with version 7.10 of Ubuntu, Kubuntu, Edubuntu, Xubuntu, and Gobuntu.
System Requirements
The minimum memory requirement for Ubuntu 7.10 is 384MB of memory for desktop CDs, and 256MB for other installation methods. (Note that some of your system's memory may be unavailable due to being used for the graphics card.)
With only the minimum amount of memory available, the installation process will take longer than normal, but will complete successfully, and the system will perform adequately once installed. Low-memory systems may be able to use the desktop CD to install by adding the only-ubiquity boot option to run just the installer rather than the whole desktop.
Installation
AACRAID in Dell PowerEdge 2650
The "server" kernel flavor does not work on Dell PowerEdge 2650 servers due to an error initializing the aacraid driver. As a workaround, users can run the "generic" kernel flavor instead. Bug #149071
Mail server and sudo
If the mail-server task is selected during installation and "No configuration" is selected in response to the question "General type of mail configuration:", then the initial user will be set up without sudo access. To repair this, boot in recovery mode and run:
addgroup --system admin adduser USERNAME admin echo '%admin ALL=(ALL) ALL' >>/etc/sudoers
where USERNAME is the name of the initial user created during installation. Selecting any other answer to the "General type of mail configuration:" question will avoid this problem. [https://launchpad.net/bugs/158952 Bug #158952]
GPT disks
Partitioning of disks with GPT disk labels, which are used on very large disks (over 2 terabytes), will not work correctly due to a conflict with changes needed to support Intel-based Apple Mac systems. If you repartition a disk with existing data (e.g. during installation), this may cause data loss unless you know how to restore the protective MBR by hand. Bug #107326
Upgrading
Users of Ubuntu 7.04 can upgrade to Ubuntu 7.10 by a convenient automated process. Complete instructions may be found at http://www.ubuntu.com/getubuntu/upgrading.
/etc/papersize not present
If you installed a pre-release of Ubuntu 7.10 from the Desktop CD prior to the Beta release, the file /etc/papersize will not exist, which may cause printing problems. This can be fixed by creating the file with the default paper size you want to use; this is usually "a4" or "letter" depending on your location, for example:
echo letter | sudo tee /etc/papersize >/dev/null
Route metrics
ifupdown now sets the default route metric to 100 for interfaces with no metric option set in /etc/network/interfaces. This change makes no difference for most users, but may affect a few users with complex networking requirements. If you rely on the previous default route metric of 0 (zero), edit /etc/network/interfaces and set the metric option explicitly for your interface, for example:
iface eth0 inet static address 192.168.0.2 network 192.168.0.0 broadcast 192.168.0.255 netmask 255.255.255.0 gateway 192.168.0.1 metric 0
Network Manager
In Ubuntu 7.10, network-manager only manages interfaces that are marked for roaming. Thus, all interfaces that were previously managed by network-manager will be set to roaming mode during upgrade. Technically, this takes any interface stanzas using the dhcp method with no options and that are marked auto, and removes them from /etc/network/interfaces. If you rely on your interfaces being started by ifupdown when the system starts up, you need to re-enable them in /etc/network/interfaces manually, or disable roaming in System -> Administration -> Network.
NFS mount support
To mount NFS filesystems, you must now install the nfs-common package.
Commercial/partner repository
The "commercial" repository on archive.canonical.com has been renamed to "partner". If you upgrade directly from an earlier release to Ubuntu 7.10 using the documented upgrade procedure, then this will be handled automatically. However, if you upgraded via the beta and/or manually, you will need to edit /etc/apt/sources.list by hand. The correct syntax is:
deb http://archive.canonical.com/ gutsy partner
UltraSPARC disk label changes
- Users upgrading to Ubuntu 7.10 on UltraSPARC should manually re-run fdisk on all disks. fdisk will warn if the disk label needs to be updated; follow its instructions. New installations of Ubuntu 7.10 will automatically use the new disk label format.
PlayStation 3 changes
The kernel flavor for PlayStation 3 systems has changed from powerpc64-smp to cell. Users upgrading their PlayStation 3 from Ubuntu 7.04 to 7.10 should run this before or after the upgrade:
$ sudo apt-get remove linux-image-powerpc64-smp linux-powerpc64-smp linux-restricted-modules-powerpc64-smp $ sudo apt-get install linux-cell
In addition, the block device names have changed from the normal /dev/sdX naming to /dev/ps3dX (e.g. /dev/sda1 will now be known as /dev/ps3da1). Standard installs should not be affected by this, since they use UUID naming. However, if you changed /etc/fstab to refer to hardcoded device names, you will need to adjust these for the new kernel.
Check if /etc/kboot.conf uses the /dev/sdX naming and change it to the UUID naming or the /dev/ps3dX naming.
GnuPG agent integration missing on upgrade from Ubuntu 7.04
If you are upgrading from Ubuntu 7.04, the file ~/.gnupg/gpg.conf may have failed to be created by default in your home directory due to a bug in the gnupg package. In that case, GPG agent integration will not be enabled by default. If you have not created your own gpg.conf, you can correct this issue by running cp /usr/share/gnupg/options.skel ~/.gnupg/gpg.conf. If you do have a gpg.conf and are affected by this issue, correct it by running echo use-agent >> ~/.gnupg/gpg.conf. Bug #76983
Other known bugs
Blank screen with some ATI hardware
People with ATI display adapters may get a blank screen when loading X due to the driver being unable to initialize certain hardware. Upstream is working on it, and hopefully we'll be able to release an update for 7.10 soon after the release. In the meantime, add 'Option "LVDSBiosNativeMode" "false"' to the driver section of xorg.conf. Bug #132716
Dual-head (multi-screen) setups
The ati driver has dropped MergedFB / Xinerama support in favour of xrandr 1.2 support, and old multi-head xorg.conf setups will break. To set up dual-head see the guides at http://www.intellinuxgraphics.org/dualhead.html or http://wiki.debian.org/XStrikeForce/HowToRandR12
As xrandr and xinerama are incompatible, you cannot mix some graphics cards using xrandr-enabled drivers with others that are still limited to using xinerama. In this case, you will need to revert to pre-xrandr versions of the respective drivers: for Intel cards, use the old "i810" driver instead of "intel", for ATI cards, use the old 6.6 version.
- With xrandr, it is now possible to use Compiz in a multi-screen setup, however it is dependent on available video card memory. The workaround for this issue is to switch to a lower virtual resolution.
Compiz and session management
Users who enable desktop effects will find that they are unable to use the "Remember currently running applications" feature. The workaround for this issue is to disable the use of the Compiz compositing window manager by turning off desktop effects in the System -> Preferences -> Appearance menu.
Suspend to RAM with fglrx
Attempting to suspend to RAM using the proprietary fglrx ATI video driver from the restricted component will hard-lock the system due to changes in the kernel's memory allocator (which will be the default in Linux 2.6.23) that have not been followed by ATI in a timely fashion; this is the vendor's responsibility and is beyond our control due to the proprietary nature of the driver. Workarounds include using Ubuntu 7.04, avoiding suspending to RAM, or using the free ATI driver. Bug #121653
Printing with AppArmor
Ubuntu 7.10 introduces an additional security layer called AppArmor, whose support for CUPS printing is not yet complete. This will result in printing failures in certain corner cases described below. The workaround in each of these cases is to disable the AppArmor CUPS profile by running sudo aa-complain cupsd. AppArmor support may be re-enabled by running sudo aa-enforce cupsd.
Printing to bluetooth printers does not work with AppArmor enabled. Bug #147800
Many third-party printer drivers (especially from printer manufacturers) do not work. Bug #152537
The HP DeskJet 710C/712C/720C/722C/820C/1000C (driver "pnm2ppa") do not work. Bug #155530
Fax on HP multi-function devices does not work
Due to a bug in HP's driver software, faxing on all of HP multi-function devices does not work. No workaround is currently available, but HP has been informed of the issue. Bug #153152
No printer admin rights for added users
Users must be in the printing administration group, "lpadmin", to be able to configure printer settings. The first system user created during installation is added to this group, but users added or modified with the user-admin tool at System -> Administration -> Users and Groups will not be added to this group. As a workaround, you can grant "lpadmin" privileges to users by running the command sudo adduser <user> lpadmin in a terminal window. Bug #152107
User management tool may lose user privileges
It is reported that the users-admin user management tool (System -> Administration -> Users and Groups) will in some cases remove the group memberships of all users when adding a new user, which means that all existing users lose their administrator privileges, possibly leaving the system with no administrator access at all. The nature of this issue has not yet been established, and therefore no fix is presently known for this issue. If you experience this problem, you can recover by booting in recovery mode and using command-line tools to restore group memberships: for example, adduser joe admin will give the user joe administrator privileges. Bug #26338
Kopete crashes when connecting to MSN
Kubuntu's instant messenger application Kopete crashes when connecting with an account using MSN. A fix should be available from gutsy-updates soon. Bug #153500
CPU fan no longer runs on Dell Latitude L400
On a Dell Latitude L400, the CPU fan no longer runs and the CPU overheats under stress. Add acpi=off to the grub boot command for a workaround. Bug #127772
Boot splash screen does not display
With some monitors the resolution is wrongly detected when installed from a desktop CD and the boot splash screen is not displayed. You can fix the resolution by editing /etc/usplash.conf. Bug #150930