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Be kind to a N00b. Video question and general queries - Forums Linux

Be kind to a N00b. Video question and general queries - Forums Linux

Be kind to a N00b. Video question and general queries

Posted: 02 Oct 2005 06:31 AM PDT

Thanks for the info Matt.

The chipset from lspci is a 3D Labs compatible.

I editied the XF86Config-4 in vi but now my Gnome has got bugggered and
the screen is all out of synch :)

Is there a way to "reset" back to the default again ?

Cheers
Mike

Dances With Crows wrote: 

After Ubuntu installation...Winxp boots up sloooooowww

Posted: 02 Oct 2005 02:01 AM PDT

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sherry wrote: 

Well, the correct answer, of course, is just don't use MS Windows :)

It's been awhile, but you should be able to find the disk manager with:

Control Panel -> Computer Administration -> Disk Something or Other

Perhaps though, the time has come to simply move on.

Neil
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New user from WinXP to Ubuntu 5.10

Posted: 01 Oct 2005 03:51 PM PDT

sherry <com> wrote:
 

A marksmanship program? ;->

Setup problems - fdisk, overlapping sectors?

Posted: 30 Sep 2005 09:48 PM PDT

On Sun, 02 Oct 2005 02:10:51 +0200, <com> wrote:
 

Since you fail to quote the earlier messages I have to gather the
information from three messages.

Ummm...

You have built several machines of the same type,
o Appliance type
o running a Via processor
o with 20 Gb drives, except two have 40 Gb drives instead

The 40 Gb drives are Samsung 2.5".

The two with 40 Gb behave differently.

You cannot boot those two from CD without setting ide=nodma on the
kernel boot command line, do I get it right? (What are the symptoms
when you don't supply ide=nodma? Can we infer that the disk interface
is traditional IDE?

You use fdisk => meaning you have booted some kernel and are
running fdisk under that kernel. With ide=nodma.

You set up one or more partitions, then hit "w" and return.

Fdisk queries the kernel about the number of bytes per sector
and the total capacity in bytes of the disk, and uses llseek()
and read() to read the second and the last sector of the disk.

In my test case, the disk had no extended partition.

Fdisk uses llseek() and write() to write a 512-byte block to
the start of the disk, calls sync(), waits for two seconds,
calls an ioctl() to make the kernel reread the partition table,
and repeats sync()-sleep()-ioctl(), sleeps for another four seconds,
and exits.

If you changed any logical partitions fdisk probably called llseek
to reach the proper sector, read the sector, modified the memory
copy of the sector, called llseek() again to access the same sector
again, then wrote the modified sector back. Repeat for each partition
modified. Or perhaps for all logical partitions.

Now you restart fdisk, but the partition data do not correspond to
the data written.

The exact nature of the differences between written and subsequently
read is perhaps not so important as noting that the contenst of one
or more sectors have changed.

Just for the record, the number of partitions is the same...
as before? as written? I guess the disks had empty partition
tables when you started, so you mean the same as written.
Some partition(s) have changed type to ntfs (where ext3?)
Partition start (first sector) overlap ... overlap what? The end
of previous partition? If the disks had empty partition
tables when you started, it means the sectors have been written.
Number of partitions read is the same as written.


We have some options.

Did the write hit the disk? Or did the kernel keep it in
its buffercache?

Block device reads and writes go through the buffercache.
Sync should force out everything. Is there any possibility that
something delayed the write so much that the call to reread the
partition table clobbered unwritten buffercache blocks with the
old data from the disk?

I don't know if sync() waits until the data are actually safely on
the platter. I *believe* it does.

Do some hardware conditions corrupt the data on the way to the disk?
Do some hardware conditions corrupt the data being read from the disk?

Are there kernel bugs that give timing errors or other corrupting
errors when using ide=nodma? Are there memory errors?

Could there be electrical problems, with the disks drawing too much
current and making the power drop below what the ram likes?
Do you have any means of observing that?

You probably have mostly readonly filesystems as long as you
are running from a CD. But /dev is a tmpfs, so if you have some
memory to spare, you can hold short files there. Can you
do

dd bs=512 count=1 if=/dev/hda (or whatever) of=/dev/mbr-before

then run fdisk, and from the advanced menu hexdump the partition
table, then partition as it should be, hexdump again, save the
dumps to /dev/something, and finally repeat the dd command, but
with of=/dev/mbr-after. Then od -t x1 /dev/mbr-before and
see if there are any pattern in the differences. I cannot imagine
you can do much more from software except debug the kernel.

The rest would be fairly lowlevel properties of the disks and the
chips on the appliance.

-Enrique
of=/

Nut and USB setup

Posted: 30 Sep 2005 02:33 PM PDT

On Fri, 30 Sep 2005 23:33:45 +0200, david walcroft <com> wrote:
 

If somebody else happen to know what you are talking about, they will
surely help.

I am possibly able to provide som assistance after you tell me what it
all is. I know what USB is, if it is Universal Serial Bus, and perhaps
"s/w" is software.

But what is a powermate? What is "doco"? "for serial ports"? What
serial ports? What is Nut?


A quick google on the internet gives some links that might be usefull:

http://gentoo-wiki.com/HOWTO_Griffin_PowerMate_with_UDEV_and_Kernel_2.6.x

If you don't have gentoo linux, there may be some differences.

If you have Fedora Core 4, you do not need to recompile the kernel,
I guess. I have the modules powermate.ko and evdev.ko anyway, so
I would probably only need to edit the hotpulg files.


http://www.eviloverlord.net/powermate.html

but linux-2.4 is not current anymore. Watch out for things that do
not apply.

-Enrique

Choose a Session

Posted: 30 Sep 2005 12:39 PM PDT


<com> wrote in message
news:googlegroups.com... 

/etc/inittab. It's a typo.
 
 

That's the one.
 

And that's the other one. It's a script file with way too many options,
designed to by default present various settings based on the
/ets/sysconfig/desktop configuration file.
 

Right, that's a configuration file you can *USE* to preset your default
desktops.

Follow the logic in all those "if" statements. I can't guess from here which
one triggers the display of and use of Gnome in your desktop settings, but
it should be traceable through your system and configuraton files.

I wonder if you play with your system much, and whether you add and delete
packages? Is gnome still listed you RPM packages, or if you accidentally did
a "yum remove" that removed it as a dependency?

VPC machine on an IBM Thinkpad x-term video problem

Posted: 30 Sep 2005 09:55 AM PDT


"Enrique Perez-Terron" <no> wrote in message
news:home.lan...
 

I'm afraid that would be an automatic spam, reaching the classic spam
"Breidbart Index" of more than 15 substantially identical posts in the same
newsgroup within 45 days, and wind up automatically cancelled.

We could post a FAQ, though....