Kaj Haulrich ([EMAIL PROTECTED]) wrote: > On Friday 10 December 2004 21:47, Tom Brinkman wrote: > > On Friday 10 December 2004 08:53 am, Keith Powell wrote: > > > > In /etc/lilo.conf try editing the append-line, especially the > > > > apic thing. Remove it completely or set it to apic=ht or > > > > noapic. > > > > > > > > HTH > > > > Kaj Haulrich. > > > > > > Thanks, Kaj. > > > > > > apic=off �has solved it. > > > > > > The append line was already �apic=ht, �so I first changed it to > > > �noapic and then �apic=noapic. Neither had any effect. > > > > For proper and valid kernel parameters give > > kernel-parameters.txt a thorough read. You'll need to have > > kernel-source installed, as it contains the file. eg, > > /usr/src/linux-2.6.8.1-20mdk/Documentation/kernel-parameters.txt > > Or you might Google for the file for your kernel. > > > > Many of the parameters I see in various ML posts are not > > valid (possibly undocumented) and are ignored by the kernel, ie, > > 'no effect'. > > > > APIC, advance programable interrupt control. If your system > > works better with 'noapic', then what this really means is you > > have non-compliant and/or deficient hardware bordering on the > > 'designed for windoze' variety. > > > > Disabling ACPI and/or APIC is best avoided when not absolutely > > necessary, to deal with sloppy, sub-standard hardware. Tho in > > fairness, other popular distros do disable them by default. If > > your system can't use these advanced features, don't kid youself > > with believing that optimization for i586, i686, or K7, compiling > > with PREEMPT and such, will provide any benefit. > > Tom, does that mean, that an empty append line defaults to booting > with both enabled ? > > Kaj Haulrich. Kaj, as Tom said,"you'll need the kernel sources installed" and the place to look for default kernel info is in:
$ cd /usr/src/linux/arch/i386/ *linux* should be a symlink but YMMV.. which contains the default configs for many different kernels. So for example, mine is: #> uname -sr Linux 2.6.8.1-12mdk since we're in the proper dir.. we grep the file for "apic" : #> cat defconfig |grep -i acpi # Power management options (ACPI, APM) # ACPI (Advanced Configuration and Power Interface) Support CONFIG_ACPI=y CONFIG_ACPI_BOOT=y CONFIG_ACPI_INTERPRETER=y CONFIG_ACPI_SLEEP=y CONFIG_ACPI_SLEEP_PROC_FS=y CONFIG_ACPI_AC=m CONFIG_ACPI_BATTERY=m CONFIG_ACPI_BUTTON=m CONFIG_ACPI_FAN=m CONFIG_ACPI_PROCESSOR=m CONFIG_ACPI_THERMAL=m CONFIG_ACPI_ASUS=m CONFIG_ACPI_TOSHIBA=m # CONFIG_ACPI_DEBUG is not set CONFIG_ACPI_BUS=y CONFIG_ACPI_EC=y CONFIG_ACPI_POWER=y CONFIG_ACPI_PCI=y CONFIG_ACPI_SYSTEM=y CONFIG_ACPI_INITRD=y CONFIG_ACPI_TC1100=m CONFIG_X86_ACPI_CPUFREQ=m # CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set CONFIG_X86_POWERNOW_K7_ACPI=y CONFIG_X86_POWERNOW_K8_ACPI=y CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI=y CONFIG_HOTPLUG_PCI_ACPI=m CONFIG_SERIAL_8250_ACPI=y CONFIG_SERIAL_WACOM_ACPI=m Then also grep for "apic": #> cat defconfig |grep -i apic CONFIG_X86_GOOD_APIC=y CONFIG_X86_UP_APIC=y CONFIG_X86_UP_IOAPIC=y CONFIG_X86_LOCAL_APIC=y CONFIG_X86_IO_APIC=y I got this info from Thomas Backlund from lurking the "expert list" earlier this year. So it would seem *yes* Kaj, it is on by default. HTH -- RickS Registered Linux user #338463 Mdk 10.1 OE - Linux 2.6.8.1-12mdk @ http://counter.li.org ================================================================ gpg --recv-keys --keyserver www.keyserver.net 0x24AABE61
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