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Line 123: − + + − + − # yum install dkms gcc + − #: (Other dependencies will be called into the installation.)+ − '''Note:''' The installation fails as of 27 June 2010 testing with 32-bit Fedora-14 while updating to glibc-common-2.12.90-3.i686<br>error: unpacking of archive failed on file /usr/lib/locale/locale-archive.tmpl: cpio: rename<br>Traceback (most recent call last):+ − File "/usr/lib/python2.6/site-packages/yum/rpmtrans.py", line 387, in callback+ + + + − File "/usr/lib/python2.6/site-packages/yum/rpmtrans.py", line 457, in _instCloseFile+ − − File "/usr/lib/python2.6/site-packages/yum/rpmtrans.py", line 246, in _scriptout − − File "/usr/lib/python2.6/site-packages/yum/rpmtrans.py", line 367, in log_scriptlet_output − − File "/usr/lib/python2.6/site-packages/yum/rpmtrans.py", line 223, in _commit − − sqlite3.OperationalError: disk I/O error − error: python callback <bound method RPMTransaction.callback of <yum.rpmtrans.RPMTransaction instance at 0xa088b8c>> failed, aborting! − </pre> − (With 512 MB of memory allocated, the update seemed to hang on the glibc update. Boosting the memory to 1024 revealed the above failure.) − * The installation fails as of 27 June 2010 testing with 32-bit Fedora-14 while updating to glibc-common-2.12.90-3.i686 − *: Using {{Code|dmsetup status}} the overlay consumption measured (after rebooting from a hang with 512 MB of memory) moved from 23376/409600 to 406568/409600 sectors. − * Installed Fedora-14 soas-i386-20100613.15.iso with this command line, − *: {{Code|/LiveOS/livecd-iso-to-disk --overlay-size-mb 1000 --home-size-mb 200 --delete-home --unencrypted-home /dev/live /dev/sda1}} − *: {{Code|dmsetup status}} before and after − *: {{Code|yum install dkms gcc}} − *: yielded these results: 21376/2048000 and 868152/2048000 (512-byte segments) − *:: So it looks like at least 425 MiBytes of overlay is required for that installation. − *: After − *: {{Code|./VboxLinuxAdditions-x86.run}} − *: {{Code|dmsetup status}} showed 928872/204800 or 454 MiBytes of the overlay consumed. − − − − + − fedora/metalink | 13 kB 00:00 − fedora | 4.3 kB 00:00 − fedora/primary_db | 13 MB 00:18 − updates/metalink | 15 kB 00:00 − updates | 4.5 kB 00:00 − updates/primary_db | 867 kB 00:00 − + − + − + − + − + + + + − + − + − + − + − + − + − + − + + + − ---> Package glibc-headers.x86_64 0:2.12-1 set to be updated+ − + − + − + − + Line 204:
Line 183: − + + + − + − + − + − + − kernel-devel x86_64 2.6.33.4-95.fc13 updates 6.3 M + − kernel-headers x86_64 2.6.33.4-95.fc13 updates 761 k + − ppl x86_64 0.10.2-10.fc12 fedora 1.1 M + + + + − + − + − Installed size: 60 M − fedora/prestodelta | 419 B 00:00 + − updates/prestodelta | 4.6 kB 00:00 + − + − + − + − + − + − + − + − + − + − + + + + + + + − + − + − + − + − Installing : kernel-devel-2.6.33.4-95.fc13.x86_64 4/9 + − + − + − + − + − Installing : dkms-2.1.0.1-1.fc12.noarch 9/9 + + + + + + + + + − + + − + − glibc-devel.x86_64 0:2.12-1 glibc-headers.x86_64 0:2.12-1 + − kernel-devel.x86_64 0:2.6.33.4-95.fc13 kernel-headers.x86_64 0:2.6.33.4-95.fc13 + − ppl.x86_64 0:0.10.2-10.fc12 + + + − + − + − + − # cd /media/VBOXADDITIONS_3.2.0_61806/+ − # ./VBoxLinuxAdditions-amd64.run + − #* (This fails currently. More testing and debugging needed.)+ − #* If upgrading from one VirtualBox version to another, start with fresh virtual disks and machines built with the new versions to avoid breakage.+ − # reboot+ + + + + − + − + + + + − + − + − (Your system does not seem to be set up to build kernel modules.+ − Look at /var/log/vboxadd-install.log to find out what went wrong)+ + + + Line 288:
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VirtualBox/Preparing a disk image (view source)
Revision as of 18:30, 16 August 2010
, 18:30, 16 August 2010no edit summary
Instructions for preparing a VirtualBox disk image from a SoaS iso image file.
Instructions for preparing a VirtualBox disk image from a SoaS iso image file.
* (Taken from Dave Bauer's posting at http://schools.sugarlabs.org/mod/forum/discuss.php?d=27.)
* (Taken from Dave Bauer's posting at http://schools.sugarlabs.org/mod/forum/discuss.php?d=27.)
* Updated 09 June 2010 with [http://www.virtualbox.org/wiki/Downloads VirtualBox 3.2.4] and 32-bit Fedora.
* Updated 16 August 2010 with [http://www.virtualbox.org/wiki/Downloads VirtualBox 3.2.8] and 32-bit Fedora.
==Installing SoaS .iso image==
==Installing SoaS .iso image==
# Create a new VM, choose a name, such as Mirabelle
# Create a new VM, choose a name, such as Mirabelle
# Enter an account name and startup Sugar.
# Enter an account name and startup Sugar.
# Open Terminal.
# Open Terminal.
# su -
# {{Code|su -}}
# parted
# {{Code|parted}}
# mklabel msdos
# {{Code|mklabel msdos}}
#: This makes a partition table.
#: This makes a partition table.
# mkpart primary ext2 0 2048
# {{Code|mkpart primary ext2 0 2048}}
#: You will receive this message:<br>Warning: The resulting partition is not properly aligned for best performance.<br>Ignore/Cancel?
#: You will receive this message:<br>Warning: The resulting partition is not properly aligned for best performance.<br>Ignore/Cancel?
#: Enter (I)gnore
#: Enter (I)gnore
# toggle 1 boot
# {{Code|toggle 1 boot}}
# quit
# {{Code|quit}}
# mke2fs /dev/sda1
# {{Code|mke2fs /dev/sda1}}
# /LiveOS/livecd-iso-to-disk --overlay-size-mb 200 --home-size-mb 200 --delete-home --unencrypted-home /dev/live /dev/sda1<br>(for earlier versions of SoaS
# {{Code|/LiveOS/livecd-iso-to-disk --overlay-size-mb 1024 --home-size-mb 200 --delete-home --unencrypted-home /dev/live /dev/sda1}}<br>(for earlier versions of SoaS
#: Blueberry - use /media/soas-2-blueberry/LiveOS/livecd-iso-to-disk<br>Strawberry - use /mnt/live/LiveOS/livecd-iso-to-disk)
#: Blueberry - use /media/soas-2-blueberry/LiveOS/livecd-iso-to-disk<br>Strawberry - use /mnt/live/LiveOS/livecd-iso-to-disk)
<ul>
<ul>
This filesystem will be automatically checked every 36 mounts or
This filesystem will be automatically checked every 36 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@localhost ~]# /LiveOS/livecd-iso-to-disk --overlay-size-mb 200 --home-size-mb 200 --delete-home --unencrypted-home /dev/live /dev/sda1
[root@localhost ~]#
[root@localhost ~]# /LiveOS/livecd-iso-to-disk --overlay-size-mb 1024 --home-size-mb 200 --delete-home --unencrypted-home /dev/live /dev/sda1
Verifying image...
Verifying image...
/dev/sr0: 0ce28e3947106fd37bab9317abf09938
/dev/sr0: 0ce28e3947106fd37bab9317abf09938
</ul>
</ul>
<ol start=20>
<ol start=20>
<li> shutdown -h now</li>
<li> {{Code|shutdown -h now}}</li>
</ol>
</ol>
==Installing VirtualBox Guest Additions==
==Installing VirtualBox Guest Additions==
The VirtualBox Guest Additions requires installing [[wikipedia:Dynamic_Kernel_Module_Support|DKMS]] and compiling virtual device drivers for the Linux kernel.
# Unmount CD/DVD in VirtualBox settings, select 'Empty' for the CD/DVD device under 'Attributes'
# Unmount CD/DVD in VirtualBox settings, select 'Empty' for the CD/DVD device under 'Attributes'
# Start the virtual machine
# Start the virtual machine
# Open Terminal
# Open Terminal
# su -
# {{Code|su -}}
<ol start=5>
<li>Determine the kernel version,<br>
{{Code|uname -a}}<br>
<pre>
<pre>
Linux localhost.localdomain 2.6.33.3-85.fc13.i686 #1 SMP Thu May 6 18:44:12 UTC 2010 i686 i686 i386 GNU/Linux</pre></li>
<li>For SoaS-Mirabelle, the kernel is Linux-2.6.33.3-85.fc13, so specific kernel-headers and kernel-devel are needed:<br><br>
{{Code|yum install kernel-headers-2.6.33.3-85.fc13 kernel-devel-2.6.33.3-85.fc13 dkms gcc}}<br>
: (Other dependencies will be called into the installation.)
{{Show|<Successful Terminal log from 16 Aug 2010 with Fedora 32 bit>
{{Show|<Successful Terminal log from 21 May 2010 with Fedora 64 bit>
|<pre>
|<pre>
[root@localhost ~]# yum install dkms gcc
[root@localhost ~]# yum install kernel-devel-2.6.33.3-85.fc13 kernel-headers-2.6.33.3-85.fc13 dkms gcc
Loaded plugins: presto, refresh-packagekit
Loaded plugins: presto, refresh-packagekit
Setting up Install Process
Setting up Install Process
Resolving Dependencies
Resolving Dependencies
--> Running transaction check
--> Running transaction check
---> Package dkms.noarch 0:2.1.0.1-1.fc12 set to be updated
---> Package dkms.noarch 0:2.1.0.1-1.fc12 set to be updated
--> Processing Dependency: kernel-devel for package: dkms-2.1.0.1-1.fc12.noarch
---> Package gcc.i686 0:4.4.4-10.fc13 set to be updated
---> Package gcc.x86_64 0:4.4.4-2.fc13 set to be updated
--> Processing Dependency: cpp = 4.4.4-10.fc13 for package: gcc-4.4.4-10.fc13.i686
--> Processing Dependency: cpp = 4.4.4-2.fc13 for package: gcc-4.4.4-2.fc13.x86_64
--> Processing Dependency: libgomp = 4.4.4-10.fc13 for package: gcc-4.4.4-10.fc13.i686
--> Processing Dependency: cloog-ppl >= 0.15 for package: gcc-4.4.4-2.fc13.x86_64
--> Processing Dependency: libgcc >= 4.4.4-10.fc13 for package: gcc-4.4.4-10.fc13.i686
--> Processing Dependency: glibc-devel >= 2.2.90-12 for package: gcc-4.4.4-2.fc13.x86_64
--> Processing Dependency: cloog-ppl >= 0.15 for package: gcc-4.4.4-10.fc13.i686
--> Processing Dependency: glibc-devel >= 2.2.90-12 for package: gcc-4.4.4-10.fc13.i686
---> Package kernel-devel.i686 0:2.6.33.3-85.fc13 set to be installed
---> Package kernel-headers.i686 0:2.6.33.3-85.fc13 set to be updated
--> Running transaction check
--> Running transaction check
---> Package cloog-ppl.x86_64 0:0.15.7-1.fc12 set to be updated
---> Package cloog-ppl.i686 0:0.15.7-1.fc12 set to be updated
--> Processing Dependency: libppl.so.7()(64bit) for package: cloog-ppl-0.15.7-1.fc12.x86_64
--> Processing Dependency: libppl.so.7 for package: cloog-ppl-0.15.7-1.fc12.i686
--> Processing Dependency: libppl_c.so.2()(64bit) for package: cloog-ppl-0.15.7-1.fc12.x86_64
--> Processing Dependency: libppl_c.so.2 for package: cloog-ppl-0.15.7-1.fc12.i686
---> Package cpp.x86_64 0:4.4.4-2.fc13 set to be updated
---> Package cpp.i686 0:4.4.4-10.fc13 set to be updated
---> Package glibc-devel.x86_64 0:2.12-1 set to be updated
---> Package glibc-devel.i686 0:2.12-3 set to be updated
--> Processing Dependency: glibc-headers = 2.12-1 for package: glibc-devel-2.12-1.x86_64
--> Processing Dependency: glibc = 2.12-3 for package: glibc-devel-2.12-3.i686
--> Processing Dependency: glibc-headers for package: glibc-devel-2.12-1.x86_64
--> Processing Dependency: glibc-headers = 2.12-3 for package: glibc-devel-2.12-3.i686
---> Package kernel-devel.x86_64 0:2.6.33.4-95.fc13 set to be installed
--> Processing Dependency: glibc-headers for package: glibc-devel-2.12-3.i686
---> Package libgcc.i686 0:4.4.4-10.fc13 set to be updated
---> Package libgomp.i686 0:4.4.4-10.fc13 set to be updated
--> Running transaction check
--> Running transaction check
--> Processing Dependency: glibc = 2.12-1 for package: glibc-common-2.12-1.i686
--> Processing Dependency: kernel-headers >= 2.2.1 for package: glibc-headers-2.12-1.x86_64
---> Package glibc.i686 0:2.12-3 set to be updated
--> Processing Dependency: kernel-headers for package: glibc-headers-2.12-1.x86_64
---> Package glibc-headers.i686 0:2.12-3 set to be updated
---> Package ppl.x86_64 0:0.10.2-10.fc12 set to be updated
---> Package ppl.i686 0:0.10.2-10.fc12 set to be updated
--> Running transaction check
--> Running transaction check
---> Package kernel-headers.x86_64 0:2.6.33.4-95.fc13 set to be updated
---> Package glibc-common.i686 0:2.12-3 set to be updated
--> Finished Dependency Resolution
--> Finished Dependency Resolution
Installing:
Installing:
dkms noarch 2.1.0.1-1.fc12 fedora 95 k
dkms noarch 2.1.0.1-1.fc12 fedora 95 k
gcc x86_64 4.4.4-2.fc13 fedora 10 M
gcc i686 4.4.4-10.fc13 updates 8.1 M
kernel-devel i686 2.6.33.3-85.fc13 fedora 6.3 M
kernel-headers i686 2.6.33.3-85.fc13 fedora 760 k
Installing for dependencies:
Installing for dependencies:
cloog-ppl x86_64 0.15.7-1.fc12 fedora 82 k
cloog-ppl i686 0.15.7-1.fc12 fedora 81 k
cpp x86_64 4.4.4-2.fc13 fedora 3.7 M
cpp i686 4.4.4-10.fc13 updates 3.4 M
glibc-devel x86_64 2.12-1 fedora 959 k
glibc-devel i686 2.12-3 updates 960 k
glibc-headers x86_64 2.12-1 fedora 588 k
glibc-headers i686 2.12-3 updates 599 k
ppl i686 0.10.2-10.fc12 fedora 1.1 M
Updating for dependencies:
glibc i686 2.12-3 updates 4.3 M
glibc-common i686 2.12-3 updates 14 M
libgcc i686 4.4.4-10.fc13 updates 103 k
libgomp i686 4.4.4-10.fc13 updates 109 k
Transaction Summary
Transaction Summary
=================================================================================================
=================================================================================================
Install 9 Package(s)
Install 9 Package(s)
Upgrade 0 Package(s)
Upgrade 4 Package(s)
Total download size: 24 M
Total download size: 40 M
Is this ok [y/N]: y
Is this ok [y/N]: y
Downloading Packages:
Downloading Packages:
Setting up and reading Presto delta metadata
Setting up and reading Presto delta metadata
updates/prestodelta | 87 kB 00:18
fedora/prestodelta | 414 B 00:00
Processing delta metadata
Processing delta metadata
Package(s) data still to download: 24 M
Package(s) data still to download: 40 M
(1/9): cloog-ppl-0.15.7-1.fc12.x86_64.rpm | 82 kB 00:00
(1/13): cloog-ppl-0.15.7-1.fc12.i686.rpm | 81 kB 00:06
(2/9): cpp-4.4.4-2.fc13.x86_64.rpm | 3.7 MB 00:06
http://ftp.usf.edu/pub/fedora/linux/updates/13/i386/cpp-4.4.4-10.fc13.i686.rpm: [Errno 14] HTTP Error 200 : http://ftp.usf.edu/pub/fedora/linux/updates/13/i386/cpp-4.4.4-10.fc13.i686.rpm
(3/9): dkms-2.1.0.1-1.fc12.noarch.rpm | 95 kB 00:00
Trying other mirror.
(4/9): gcc-4.4.4-2.fc13.x86_64.rpm | 10 MB 00:17
(2/13): cpp-4.4.4-10.fc13.i686.rpm | 3.4 MB 01:47
(5/9): glibc-devel-2.12-1.x86_64.rpm | 959 kB 00:01
(3/13): dkms-2.1.0.1-1.fc12.noarch.rpm | 95 kB 00:09
(6/9): glibc-headers-2.12-1.x86_64.rpm | 588 kB 00:00
(4/13): gcc-4.4.4-10.fc13.i686.rpm | 8.1 MB 04:06
(7/9): kernel-devel-2.6.33.4-95.fc13.x86_64.rpm | 6.3 MB 00:02
(5/13): glibc-2.12-3.i686.rpm | 4.3 MB 01:50
(8/9): kernel-headers-2.6.33.4-95.fc13.x86_64.rpm | 761 kB 00:00
(6/13): glibc-common-2.12-3.i686.rpm | 14 MB 04:43
(9/9): ppl-0.10.2-10.fc12.x86_64.rpm | 1.1 MB 00:02
(7/13): glibc-devel-2.12-3.i686.rpm | 960 kB 00:22
(8/13): glibc-headers-2.12-3.i686.rpm | 599 kB 00:15
(9/13): kernel-devel-2.6.33.3-85.fc13.i686.rpm | 6.3 MB 03:25
(10/13): kernel-headers-2.6.33.3-85.fc13.i686.rpm | 760 kB 00:24
(11/13): libgcc-4.4.4-10.fc13.i686.rpm | 103 kB 00:05
(12/13): libgomp-4.4.4-10.fc13.i686.rpm | 109 kB 00:04
(13/13): ppl-0.10.2-10.fc12.i686.rpm | 1.1 MB 00:26
-------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------
Total 718 kB/s | 24 MB 00:33
Total 32 kB/s | 40 MB 21:10
Running rpm_check_debug
Running rpm_check_debug
Running Transaction Test
Running Transaction Test
Transaction Test Succeeded
Transaction Test Succeeded
Running Transaction
Running Transaction
Installing : cpp-4.4.4-2.fc13.x86_64 1/9
Installing : kernel-devel-2.6.33.3-85.fc13.i686 1/17
Installing : ppl-0.10.2-10.fc12.x86_64 2/9
Installing : kernel-headers-2.6.33.3-85.fc13.i686 2/17
Installing : cloog-ppl-0.15.7-1.fc12.x86_64 3/9
Updating : libgcc-4.4.4-10.fc13.i686 3/17
Installing : dkms-2.1.0.1-1.fc12.noarch 4/17
Installing : kernel-headers-2.6.33.4-95.fc13.x86_64 5/9
Updating : glibc-2.12-3.i686 5/17
Installing : glibc-headers-2.12-1.x86_64 6/9
Updating : glibc-common-2.12-3.i686 6/17
Installing : glibc-devel-2.12-1.x86_64 7/9
Updating : libgomp-4.4.4-10.fc13.i686 7/17
Installing : gcc-4.4.4-2.fc13.x86_64 8/9
Installing : ppl-0.10.2-10.fc12.i686 8/17
Installing : cloog-ppl-0.15.7-1.fc12.i686 9/17
Installing : cpp-4.4.4-10.fc13.i686 10/17
Installing : glibc-headers-2.12-3.i686 11/17
Installing : glibc-devel-2.12-3.i686 12/17
Installing : gcc-4.4.4-10.fc13.i686 13/17
Cleanup : libgomp-4.4.4-2.fc13.i686 14/17
Cleanup : glibc-common-2.12-1.i686 15/17
Cleanup : glibc-2.12-1.i686 16/17
Cleanup : libgcc-4.4.4-2.fc13.i686 17/17
Installed:
Installed:
dkms.noarch 0:2.1.0.1-1.fc12 gcc.x86_64 0:4.4.4-2.fc13
dkms.noarch 0:2.1.0.1-1.fc12 gcc.i686 0:4.4.4-10.fc13
kernel-devel.i686 0:2.6.33.3-85.fc13 kernel-headers.i686 0:2.6.33.3-85.fc13
Dependency Installed:
Dependency Installed:
cloog-ppl.x86_64 0:0.15.7-1.fc12 cpp.x86_64 0:4.4.4-2.fc13
cloog-ppl.i686 0:0.15.7-1.fc12 cpp.i686 0:4.4.4-10.fc13 glibc-devel.i686 0:2.12-3
glibc-headers.i686 0:2.12-3 ppl.i686 0:0.10.2-10.fc12
Dependency Updated:
glibc.i686 0:2.12-3 glibc-common.i686 0:2.12-3 libgcc.i686 0:4.4.4-10.fc13
libgomp.i686 0:4.4.4-10.fc13
Complete!
Complete!
</pre>}}
</pre>}}<br></li>
<li> In the VirtualBox Guest 'Devices Menu', select 'Install Guest Additions...'</li>
<li> {{Code|mkdir /mnt/cdrom}} </li>
<li> {{Code|mount /dev/sr0 /mnt/cdrom/}} </li>
<li> {{Code|cd /mnt/cdrom/}} </li>
<li> {{Code|./VBoxLinuxAdditions-x86.run}}<br>
* {{Code|dmsetup status}}
*: reveals that 953440/2097152 (512-byte sectors) or 448 MB of the 1024 MB overlay file has been consumed by the installation process
* If upgrading from one VirtualBox version to another, start with fresh virtual disks and machines built with the new versions to avoid breakage.<br>
</li>
<li> reboot </li>
</ol>
{{Show|<Terminal log:>
{{Show|<Terminal log:>
|<pre>
|<pre>
[root@localhost ~]# cd /media/VBOXADDITIONS_3.2.0_61806/
[root@localhost ~]# mkdir /mnt/cdrom/
[root@localhost VBOXADDITIONS_3.2.0_61806]# ./VBoxLinuxAdditions-amd64.run
[root@localhost ~]# mount /dev/sr0 /mnt/cdrom/
mount: block device /dev/sr0 is write-protected, mounting read-only
[root@localhost ~]# cd /mnt/cdrom/
[root@localhost cdrom]# ./VBoxLinuxAdditions-x86.run
Verifying archive integrity... All good.
Verifying archive integrity... All good.
Uncompressing VirtualBox 3.2.0 Guest Additions for Linux........
Uncompressing VirtualBox 3.2.8 Guest Additions for Linux........
VirtualBox Guest Additions installer
VirtualBox Guest Additions installer
Building the VirtualBox Guest Additions kernel modules [FAILED]
Building the VirtualBox Guest Additions kernel modules
Building the main Guest Additions module [ OK ]
Building the shared folder support module [ OK ]
Building the OpenGL support module [ OK ]
Doing non-kernel setup of the Guest Additions [ OK ]
Starting the VirtualBox Guest Additions [ OK ]
Installing the Window System drivers
Installing the Window System drivers
Installing X.Org Server 1.8 modules [ OK ]
Installing X.Org Server 1.8 modules [ OK ]
Installing graphics libraries and desktop services componen[ OK ]
Installing graphics libraries and desktop services componen[ OK ]
[root@localhost cdrom]# dmsetup status
live-osimg-min: 0 8388608 snapshot 2344/2344 24
live-rw: 0 8388608 snapshot 953440/2097152 3720
</pre>}}
</pre>}}
<!--
* Note that you will need to have the same kernel version as you have kernel-headers and kernel-devel
* Note that you will need to have the same kernel version as you have kernel-headers and kernel-devel
* I recommend:
* I recommend:
</pre>
</pre>
* With the guest additions successfully installed, it should '''Not be necessary to configure the screen (below)'''
* With the guest additions successfully installed, it should '''Not be necessary to configure the screen (below)'''
Thanks! for this information. update kernel consumed 203280/1048576 of the overlay and install kernel-headers kernel-devel dkms gcc raised consumption to 1047112/1048576 leading to failure of the ./VBoxLinuxAdditions-x86.run -->
===Configure Screen===
===Configure Screen===
If you want to match the 16 bpp XO screen and a particular display size, you may
# Edit /etc/X11/xorg.conf to match the following section:
# Edit /etc/X11/xorg.conf to match the following section:
#* 832x624 - matches default XO display proportions
#* 832x624 - matches default XO display proportions