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#1 2011-07-20 01:53:18

xtud
Member
Registered: 2010-11-27
Posts: 3

4G ram could not boot arch64

My laptop has a T4400 CPU and arch64,when it had 2.5G ram,worked fine.
when I add RAM to 4G ,my laptop always restart when booting.
then,I found that if I turn off acpi on grub.cfg,it could boot.
I can't find any error on log.

I tried to install 64bit opensuse 11.4,it  has the same problem.
and I also installed 32bit arch,it can boot up normally.

Is that my laptop problem? or I should rebuild the kernel and change some config.
maybe a bios bug??

I could not use any hotkey on my keyboard,such as turn off the webcam.That would restart the laptop.

Last edited by xtud (2011-07-22 14:58:41)

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#2 2011-07-20 20:37:07

lagagnon
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From: an Island in the Pacific...
Registered: 2009-12-10
Posts: 1,087
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Re: 4G ram could not boot arch64

Possibly mismatched RAM sticks? Have you run "memtest" from a Live Linux CD (or UBCD) to check the RAM itself?


Philosophy is looking for a black cat in a dark room. Metaphysics is looking for a black cat in a dark room that isn't there. Religion is looking for a black cat in a dark room that isn't there and shouting "I found it!". Science is looking for a black cat in a dark room with a flashlight.

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#3 2011-07-22 10:48:44

xtud
Member
Registered: 2010-11-27
Posts: 3

Re: 4G ram could not boot arch64

Thanks for reply.
I have tried Memtest ,it shows no problem.
and my two RAM sticks are same,at least the hardware test tool shows  that.
I could boot into Windows 7,with PAE Patch I could use 4G totally.
arch(32bit) show more than 3G RAM,and apci could run.
I don't want to go back to use 32bit and reinstall all app.
forgive for my poor english...

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#4 2011-07-22 12:32:59

xtud
Member
Registered: 2010-11-27
Posts: 3

Re: 4G ram could not boot arch64

I found something new.
"acpi=off" can boot up but "acpi=ht"

it's said that "Try booting with "acpi=ht": This disables all of ACPI except just enough to enable Hyper Threading. If acpi=off works and acpi=ht fails, then the issue is in the ACPI table parsing code itself, or perhaps the SMP code."

Read more: http://www.brighthub.com/computing/linu … z1SpyBjydN

Last edited by xtud (2011-07-22 12:40:01)

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