Archive for the ‘Hardware’ Category

LGA 775 Replacement Mounting Clips

Saturday, July 28th, 2007

I’ve been trying to find these blasted mounting clips for the stock intel socket lga775 heatsink/fan units for the better part of the last month.

Intel lga775 replacement mounting pins

If you’ve ever tried to install them, or even worse, remove the heatsink after a not-perfect installation, you’ll know why I need replacements. They break easily! Well, after spending a few hours looking at complete new replacement heatsink units and noting that half of them use these pins in the first place, I renewed my search and finally found a forum post link directly to the intel site where they sell them in packs of 4!

Voila, Kit Fasteners for LGA775 fan heatsinks (set of 4)

Now, if only their store would work … grrrrrr.

ASUS A7N8x Deluxe Linux (in)compatibility

Sunday, February 25th, 2007

Continuing in the vein of ’stupid hardware problems’, this week I discovered that the ASUS A7N8x deluxe motherboard I’ve been trying to nurse along as the backbone of my MythTV PVR basically doesn’t play nicely with linux, period. Don’t ask me why I didn’t try searching the web a little harder before, since most of the threads I’ve referenced below are ancient. Basically there is something screwy with its ACPI implementation, SATA controller, and just about everything else.

The issues apparently come and go with varying kernel versions, although I’m sure many folks don’t notice them since they don’t put the machine under heavy load or try to use both ethernet ports. For instance, the 3com and nvidia ethernet controllers absolutely will not stay bound to the same ethX devices after a warm reboot. Disabling one or the other ethernet card in the BIOS eliminates this problem fairly effectively.

Secondly, the machine crashes consistently under heavy I/O load. Sometimes it takes an hour, other times copying a video file from one drive to another will crash it immediately.

I’ve got it running with only a few crashes per week under FC5 by using the following kernel line

kernel /vmlinuz-2.6.18-1.2257.fc5 ro root=/dev/hda2 rhgb acpi=off noapic nolapic.

I’ve not yet tried an FC6 era kernel, but at this point since the general consensus is that the board runs windows reliably, I think I’m going to try and do some shuffling in order to make using windows on it a possibility.

References:

  • http://web.archive.org/web/20040117183728/http://attila.stevens-tech.edu/~dkopko/a7n8x.txt
  • http://www.nvnews.net/vbulletin/showthread.php?t=6946
  • http://lkml.org/lkml/2003/11/11/217

WatchGuard Core x750e first impressions

Friday, December 8th, 2006

So I finally got my WatchGuard eval unit. 2 months after I would have liked, but c’est la vie, I guess they had some employee turnover over there and my box got lost in the shuffle. Upon opening the box, everything looks very nice, and yes, its all red, and very cute looking. Turning it on, however, the LCD screen just says ‘Booting OS …’ and never makes it farther… Not a great sign.

There is, however a yellow sticker on top that says I have to install Fireware Appliance Software on the device, and that I must hold down the up arrow on the front while turning it on. This I can do. So I do. And the box just says ‘Booting OS …’ and never makes it further. So it’s time to get all sorta of ninja-hacker-style on it’s ass.

I plug in the included serial console cable, install [tutty](http://putty.dwalin.ru/) on my newly vistafied workstation and fiddle around until I determine that the watchguard is using 115200,n,8,1. This is what I see:


Press any key to continue.

So good little monkey that I am, I smash the spacebar a few times, and get this


 +-------------------------------------------------------------------------+
 | Red Hat Linux (2.4.26-wgrd)                                             |
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 +-------------------------------------------------------------------------+
      Use the ^ and v keys to select which entry is highlighted.
      Press enter to boot the selected OS, 'e' to edit the
      commands before booting, 'a' to modify the kernel arguments
      before booting, or 'c' for a command-line.

    GRUB  version 0.93  (638K lower / 515072K upper memory)

 [ Minimal BASH-like line editing is supported.  For the first word, TAB
   lists possible command completions.  Anywhere else TAB lists the possible

Ok, so they're running a redhat variant. Well, I knew this was a linux based product, and I know redhat, so in general this is good news. 15 seconds later, grub times out and I see this:


  Booting 'Red Hat Linux (2.4.26-wgrd)'

root (hd0,2)
 Filesystem type is ext2fs, partition type 0x83
kernel /boot/bzImage ro root=/dev/hda3 console=ttyS0,115200 ramdisk_size=256000
 ide=nodma

Error 15: File not found

Press any key to continue...

Uh ok. So this isn't such great news. Getting really fancy and setting the boot loader to boot (hd0,0)/bzImage gives me this:

Pretty standard linux boot spam, but it looks like perhaps we've got a bad CF disk, given the seek errors. The real kicker is that punching the serial number from the back of the box into the 'activate online' page of the WatchGuard website is utterly unsuccessful as well.

In its defense, the red box is at least as good looking as I imagined it, and it IS exactly the solid state Linux 1u rackmount with a lot of Ethernet interfaces i've been looking for. Unfortunately, $3000 + service contracts is an awful lot of money for a cute box with software that doesn't work!

Update 2006-12-10

I spent too much of my weekend poking around with this and posting on the [WatchGuard forum](http://forum.watchguard.com), but I'm pretty convinced that this machine is just DOA. I can't get link lights on any of the Ethernet interfaces (sort of a show stopper for a firewall), and in addition the compact flash card doesn't seem to be loaded with the rescue image, let alone a full firewall OS. I was at least able to get onto the livesecurity website, turns out I'd transposed two digits of the serial number while reading it leaning over the firewall, and caught it when I recopied it from the box.

Being able to get on the website means I was able to get the software, and found out that it requires an explorer extension to complete the installer, which means it won't finish installing on xp64 or vista64. None of it seemed to want to run on vista either, but putting it into compatability mode seems to bring it to the same point as xp, meaning it won't finish installing because I can't activate the toolbar in a way it can find it since it installs into 32 bit explorer. The good news is that the important parts of the install do seem to have completed, at least all the files are on the disk. I was able to try to use fbxinstall to reinstall my CF image, but apparently that does'nt work on the e-series boxes, so I don't know if it failed due to bum hardware or not. Maybe its just me, but it seems making your installer dependent on activating a shell extension, for a firewall product of all things, seems like some dumb decision making.

I've opened a support ticket and started some dialog, but I'm not holding a lot of hope that I'll actually get a replacement unit in here in time to have it usable over the holidays. The responses I've gotten to my post on the forums indicate that the general user base of these boxes, 'experts' included, doesn't really have a clue what the underpinnings of the system look like, which is I guess for the most part a good thing. It does, however, tend to reduce the usefulness of their responses to my questions. DOA units also seems to be outside the radar of the average forum denizen, so I'm hoping my box is an isolated case. It does start making HA failover look pretty nice though.

Update 2006-12-11

I got a call from a 'fixer' at WatchGuard who has arranged for me to get a new unit overnighted. He concurs with my assessment that the unit is very much DoA. Kudo's to my sales guy and watchguard for stepping up on this one, I'm awaiting a functional unit with baited breath!