http://www.ubuntu.com/getubuntu/releasenotes/710 Ubuntu 7.10 Release Notes 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<https://launchpad.net/bugs/149071 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. 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<https://launchpad.net/bugs/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 <https://bugs.launchpad.net/bugs/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<https://launchpad.net/ubuntu/+source/xserver-xorg-video-ati/1:6.6.3-2....    -    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 <https://launchpad.net/bugs/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 <https://launchpad.net/bugs/147800    -    Many third-party printer drivers (especially from printer    manufacturers) do not work. Bug #152537<https://launchpad.net/bugs/152537 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<https://launchpad.net/bugs/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 <https://launchpad.net/bugs/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 <https://launchpad.net/bugs/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<https://bugs.launchpad.net/ubuntu/+source/kdenetwork/+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<https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/12... 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<https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/150930