[Fwd: Re: Unofficial FAQ]
Xose Vazquez Perez
xose at wanadoo.es
Thu Nov 13 01:21:36 UTC 2003
Some tricks, read it before to put here any report of troubles.
Made in building #3.
-------- Original Message --------
Subject: Re: Unofficial FAQ
Date: Wed, 12 Nov 2003 19:12:04 -0500 (EST)
From: Alan Cox <alan at redhat.com>
Reply-To: fedora-test-list at redhat.com
To: fedora-test-list at redhat.com
One thing I did a while ago that might be useful for unofficial FAQ
merging is this (its Alan's collected notes not an official Red Hat document)
Feel free to use them.
o System hangs/reports errors after booting from CD-ROM
Add the boot option "ide=nodma".
o System hangs after enabling APM
Add the boot option "apm=off".
o System hangs at random when idle
Add the boot option "apm=off". If this does not help try
the option "nohlt". Also try "acpi=off" on newer ACPI using
o System hangs reporting SCSI timeouts or at the IDE probe
and "ide=nodma" does not help.
If this is an Intel 440GX board, await errata news
For other SMP boards please try "noapic"
You may also need to set the BIOS MP to "MP 1.1" if you can
o System hangs probing the PCMCIA devices
o System hangs probing ieee1394/firewire devices
o VIA system hangs activating networking
o System boots to graphical desktop but the desktop appears
and then the machine crashes
Boot with "apm=off" and see if this helps. A few laptops
have buggy battery query support.
o Screen goes blank or crazy after booting (especially LCD panel)
Boot with the option "nofb"
o System crashes erratically
When reporting this if you can also verify the memory
with memtest86 it helps filter out faulty systems.
o AMD Multiprocessor
Dual Athlon systems require up to date BIOS versions or you
may see hangs. In addition most of them require a PS/2 mouse
is present to avoid random hangs when using IDE
o USB or networking fails on VIA chipset multiprocessor machine
Specify the option "noapic"
o SIS chipset SMP systems
"noapic" may be required due to an incompatibility with the Intel
APIC behaviour in some SIS parts.
o APIC error messages appear or the system hangs at high load
Try with the option "noapic" selected.
o Compaq DL360
o Sony Vaio
Sometimes requires "pci=off" is specified as a boot option
during install but not after install. This is due to interactions
between Linux and the Vaio's PCMCIA CD-ROM boot magic.
If you have problems try the following options
o Sound does not work
If you have a USB webcam with microphone unplug this and
retest if possible. There is a known problem with the sound
system trying to use the USB webcam as primary sound system
o No CD audio
Linux systems use the analog CD audio link rather than digital
ripping as some new systems do. Check the machine has a CD audio
o USB keyboard works at the boot prompts but not later
If neccessary boot the system with "nousb". This should
let you get the system booted.
o USB keyboard does not work in boot loader (grub)
Ensure the USB legacy support is enabled in the BIOS
If the problem remains try an install using Lilo and
please file a bug.
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