LinuxQuestions.org
LinuxAnswers - the LQ Linux tutorial section.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices



Reply
 
Search this Thread
Old 04-25-2011, 09:00 AM   #1
Fred Caro
Member
 
Registered: May 2007
Posts: 736

Rep: Reputation: 62
dodgy bios? 'Bios may corrupt low RAM, working around it'


The quotes are for the worrying results of 'dmesg | less'. The motherboard is ASRock N68-S and the ram corsair. The same message occurs on Mint 9 and Suze 11.3.
My main question is, given that the kernel takes over after boot up, will the above restrict aspects of performance or will the kernel take care of shortfalls in the bios.

Fred.
 
Old 04-25-2011, 09:34 AM   #2
TobiSGD
Moderator
 
Registered: Dec 2009
Location: Hanover, Germany
Distribution: Main: Gentoo Others: What fits the task
Posts: 15,651
Blog Entries: 2

Rep: Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095
As the kernel states in the message, it will work around it. I have set up many Ubuntu systems with the N68-S and never had problems.
 
1 members found this post helpful.
Old 04-25-2011, 09:38 AM   #3
fpmurphy
Member
 
Registered: Jan 2009
Location: /dev/ph
Distribution: Fedora, Ubuntu, Redhat, Centos
Posts: 294

Rep: Reputation: 61
Problem is probably that your chipset does not support memory remapping. If this is the case, just means that you will have a little less useable memory that what is actually installed.
 
1 members found this post helpful.
Old 05-01-2011, 04:12 AM   #4
cascade9
Senior Member
 
Registered: Mar 2011
Location: Brisneyland
Distribution: Debian, aptosid
Posts: 3,718

Rep: Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904
I dont seem to get that message in "dmesg | less" with a N68S-UCC, 2 x 1GB Geil DDR2-800 RAM.

That could be due to slightly different BIOS versions.
 
Old 05-01-2011, 08:45 AM   #5
Fred Caro
Member
 
Registered: May 2007
Posts: 736

Original Poster
Rep: Reputation: 62
dodgy bios etc

My board is the plain N68-S with no bios update. I wonder would there be any point adding a separate graphics card if the chipset will not do memory re-mapping?

Fred.
 
Old 05-01-2011, 09:05 AM   #6
cascade9
Senior Member
 
Registered: Mar 2011
Location: Brisneyland
Distribution: Debian, aptosid
Posts: 3,718

Rep: Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904
I cant be sure that your chipset/BIOS is can do memory remapping, but from everything I've seen from a quick search it should do. I dont think thats your problem...if it even is a problem.

I always prefer to use a video card over using onboard video. Apart from a few baords with 'sideport RAM', using onboard video always steals some RAM from the main system RAM. It will also use some of the RAM bandwidth.

BTW, the N68-S UCC (I used a slightly wrong name above, sorry) I tried 'dmesg | less' on is running a video card, a 8400GS. Awful card, dont get one. I wonder if pulling the card and running 'dmesg | less' will get me the same 'BIOS may corrupt low RAM, working around it' warning? I'll give it a try in the next few days and see.
 
Old 05-02-2011, 04:45 AM   #7
Fred Caro
Member
 
Registered: May 2007
Posts: 736

Original Poster
Rep: Reputation: 62
bios

cascade9, thanks that would be helpful as don't have any graphics cards laying around here. I notice that the filching of ram does not seem to happen on laptops and they, by their nature, must have on board graphics, perhaps just better ones!

Fred.
 
Old 05-02-2011, 05:15 AM   #8
TobiSGD
Moderator
 
Registered: Dec 2009
Location: Hanover, Germany
Distribution: Main: Gentoo Others: What fits the task
Posts: 15,651
Blog Entries: 2

Rep: Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095Reputation: 4095
Quote:
Originally Posted by Fred Caro View Post
laptops and they, by their nature, must have on board graphics, perhaps just better ones!
There are may laptops out there that have dedicated graphic-chips with their own RAM. Just a side note.
 
Old 05-02-2011, 05:29 AM   #9
cascade9
Senior Member
 
Registered: Mar 2011
Location: Brisneyland
Distribution: Debian, aptosid
Posts: 3,718

Rep: Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904Reputation: 904
Most of the laptops I've seen do share RAM from the main system RAM. Theres some that dont, only nVidia or ATI GPU versions AFAIK.

The onboard video for laptops tend to be pretty much the same as the desktop versions with intel, with nVidia and ATI they tend to run a slower core, have less shaders, etc.. More core MHz, more shaders = more heat, which is a bad thing for laptops. Not that you need much in the way of core MHz or shaders for normal desktop use, even with things like desktop effects running.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Find Low RAM Requirement Linux Distribution For No Bios, Drivers Download Mainboard david68 Linux - Distributions 4 08-07-2008 03:04 AM
Easy Bios? (floppy that boots and runs new bios) tearinox Linux - Hardware 5 10-12-2004 06:13 PM
need Bios driver to exec custom on board bios code wmain Linux - Software 0 09-03-2004 09:32 AM
old BIOS (1992) won't detect my cdrom drive; BIOS says: neither IDE prots enabled carbono Linux - Hardware 5 05-18-2004 12:07 PM
Ram and bios problem hedburner Linux - Hardware 4 06-07-2003 08:58 PM


All times are GMT -5. The time now is 04:45 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration