> It does not look like this issue is common - googling for "Linux EDD Boot 
> hang" does not bring up relevant and recent results - in fact this post of 
> yours comes on top.

i don`t wonder here - how should one know that it`s an edd problem if all he 
sees is a blank screen with a blinking cursor in the upper left ?
so i assume, "Linux EDD Boot hang" isn`t the best term for searching here.

i think, there is no universal search phrase - i found some references with 
different words (linux install, blank screen, blinking cursor....)

some of them
http://forums.suselinuxsupport.de/lofiversion/index.php/t61581.html
http://suseforums.net/index.php?showtopic=1302  
http://forums.suselinuxsupport.de/lofiversion/index.php/t3157.html
http://www.linuxforums.org/forum/installation/73984-cant-boot-past-loading-kernel-fedora-4-a.html
http://ubuntuforums.org/archive/index.php/t-146180.html
http://ubuntuforums.org/showthread.php?t=450630
http://www.linuxquestions.org/questions/linux-software-2/grub-freezes-before-uncompressing-kernel-464619/

not sure if really all of them are the edd problem i have, but i`m quite sure 
for some of those.
can provide more links if somebody likes.

> Adding 3 printks for each such obscure problem would make it even more 
i wouldn`t call that problem obscure.
i have seen this problem more than 5 times since that code is in linux. so it`s 
at least enough to discuss about even if no other person thinks it`s necessary 
:)  just the fact that it`s not been discussed often (here or elsewhere) 
doesn`t mean, that it exist or that users come across that. it`s more that type 
of "mhh, let`s try linux instead of windows. oh, doesn`t boot. ok, let`s stay 
with windows then...". you don`t expect people like those posting the right 
question to the right forum, do you?


> If there are known chipsets / BIOSes that have this problem - applying 
> quirks - something like this quirk for pmtmr [1]- (if they work this 
> early) or even special casing them with forced edd=off may be the right and 
> more useful thing to do.
mhh. i`m unsure. ok, i`m no kernel-hacker but there are so many variants of 
bios/hardware out there so blacklisting certain bios versions may be never more 
than half of a solution.

roland


> -----Ursprüngliche Nachricht-----
> Von: "Parag Warudkar" <[EMAIL PROTECTED]>
> Gesendet: 16.12.07 18:34:48
> An: [EMAIL PROTECTED]
> CC: linux-kernel@vger.kernel.org, [EMAIL PROTECTED], [EMAIL PROTECTED]
> Betreff: Re: [PATCH] [RFC] be more verbose when probing EDD

> 
> On Sun, 16 Dec 2007, [EMAIL PROTECTED] wrote:
> 
> >
> > - it seems there are buggy Bios implementations out there which have 
> > problems with EDD
> > - your favourite distro may have set CONFIG_EDD=y|m , so EDD probe is on by 
> > default quite often nowadays.
> > - setting "edd=off" when you get that hang on boot is _not_ obvious.
> 
> It does not look like this issue is common - googling for "Linux EDD Boot 
> hang" does not bring up relevant and recent results - in fact this post of 
> yours comes on top. Further more there does not seem to be problems with 
> newer BIOSes so we would be irritating lot many users needlessly.
> 
> Adding 3 printks for each such obscure problem would make it even more 
> complex to parse and make sense of the boot log - I, for example, already 
> dislike the mostly-useless-to-end-user stuff it spews on a normal boot.
> 
> If there are known chipsets / BIOSes that have this problem - applying 
> quirks - something like this quirk for pmtmr [1]- (if they work this 
> early) or even special casing them with forced edd=off may be the right and 
> more useful thing to do.
> 
> [1] http://www.webservertalk.com/archive242-2006-3-1447442.html
> 
> Parag
> 


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