Roundtable May 2006

roundtable@muug.ca

10 participants
13 discussions

Core 5 DMA errors
by schwartz 31 May '06

31 May '06

I'm getting weird DMA errors on my Fedora Core 5 computer. The motherboard is an ASRock P4VM800 with 512MB DDR Celeron 2533 MHz Model 4 hard drive is a Hitachi 7K80 7200 rpm parallel-ATA 80 Gig. Fedora is installed on /dev/hda7 9.4 Gig partition ext3 The DMA error message shows up during big file, or multiple file, copying from one directory to another, and during bootup. dmesg shows this message: cd ..hda: dma_intr: status=0x51 { DriveReady SeekComplete Error } hda: dma_intr: error=0x84 { DriverStatus Error BadCCR } ide: failed opcode was: unknown Sometimes the error message shows up at one point in the boot process, sometimes in another. During really big copies, the DMA error message is quite frequent. I also have XP, 98SE, and Slackware on the machine but so far none of them have this error, or maybe they're not telling. Can anyone tell me how to deal with this problem?

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Core 5 DMA errors
by schwartz 31 May '06

31 May '06

Thanks very much for the help. I read the article and checked the IDE cables as instructed, and found a loose connection. I've booted Fedora a couple times with no error messages showing, so maybe it was the loose IDE cable connection. I hope so because I can't remember where I bought the hard drive and I can't find any sales slips for it. Bad Moon is Rising. Yuk! That was the first tune I had to learn on guitar over 30 years ago and I still can't listen to it without cringing. Yuk.

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Fwd: UG News--Good. Fast. Cheap. O'Reilly Launches PDF Guides
by Sean Walberg 30 May '06

30 May '06

Some of these might be of interest to the list members... Sean ---------- Forwarded message ---------- From: Marsee Henon <marsee(a)oreilly.com> Date: May 30, 2006 1:07 PM Subject: UG News--Good. Fast. Cheap. O'Reilly Launches PDF Guides Good. Fast. Cheap. O'Reilly Launches PDF Guides As part of O'Reilly Media's commitment to delivering vital technology information to people who need it, when they need it, O'Reilly is launching an ongoing series of PDF publications to address cutting edge technologies. O'Reilly's PDF guides are in-depth, immediate, timely, and authoritative. Readers can purchase and download the PDFs through the O'Reilly online store, with no restrictions on the ability to save, copy, or print them. The advantages to readers are numerous. O'Reilly authors can disseminate crucial information as the need arises, without having to wait for enough material to fill an entire book. Production time is reduced dramatically, giving IT professionals and others immediate access to the knowledge they want. Plus, readers can easily search the text, copy and paste handy bits of code into their applications, and take the PDF with them even when they're offline. But most importantly, readers won't have to compromise in their pursuit of timely information--these PDFs provide the high-quality content for which O'Reilly has come to be known. This month's PDF offerings are available now: "Build Tag Clouds in Perl and PHP" by Jim Bumgardner First popularized by the web sites Flickr, Technorati, and del.icio.us, these amorphous clumps of words now appear on a slew of web sites as visual evidence of their membership in the elite corps of "Web 2.0." This PDF analyzes what is and isn't a tag cloud, offers design tips for using them effectively, and then shows how to collect tags and display them in the tag cloud format. Scripts are provided in Perl and PHP. ISBN: 0-596-52794-2, 46 pages, $9.99 US, $12.99 CAN http://www.oreilly.com/catalog/tagclouds/ "Web Services on Rails" by Kevin Marshall In recent years, web services have become increasingly useful to smaller web site developers. Thanks to standards like SOAP and XML-RPC as well as frameworks such as Ruby on Rails, developers can easily create web service clients and servers with fewer errors. This guide looks at how Ruby on Rails makes building web service clients and servers simple and fun, with plenty of working examples and code details so you can see just how everything works. ISBN: 0-596-52796-9, 32 pages, $9.99 US, $12.99 CA http://www.oreilly.com/catalog/websor/ "Atlas UpdatePanel Control" by Bertrand Le Roy and Matt Gibbs The key to making ASP.NET applications more responsive to user input is the UpdatePanel control. In this tutorial, you'll learn from the experts: Bertrand Le Roy, UpdatePanel control's architect and developer, and Matt Gibbs, Atlas dev team manager. This PDF document contains all you need to get started implementing AJAX functionality in existing ASP.NET applications. ISBN: 0-596-52747-0, 56 pages, $9.99 US, $12.99 CA http://www.oreilly.com/catalog/atlasupc/ "Search Engine Optimization" by Harold Davis SEO--short for Search Engine Optimization--is the art, craft, and science of driving web traffic to web sites. Whether your web site depends on broad, general traffic, or high-quality, targeted traffic, this PDF has the tools and information you need to draw more traffic to your site, and build your bottom line. You'll learn how to effectively use PageRank and Google itself--effective use of SEO means understanding how Google works: how to boost placement in Google search results, how not to offend Google, and how best to use paid Google programs. You'll also learn how to best organize your web pages and web sites, apply SEO analysis tools, establish effective SEO best practices, and much more. ISBN: 0-596-52786-1, 41 pages, $9.99 US, $12.99 CA http://www.oreilly.com/catalog/seo/ Other PDFs from O'Reilly can be found in the O'Reilly Store at: http://pdfs.oreilly.com ================================================================ O'Reilly 1005 Gravenstein Highway North Sebastopol, CA 95472 http://ug.oreilly.com/ http://ug.oreilly.com/creativemedia/ ================================================================ -- Sean Walberg <sean(a)ertw.com> http://ertw.com/

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Census now available to Linux users
by John Lange 20 May '06

20 May '06

For those of you not also subscribed to the PLUG mailing list, Syd Weidman points out that the census web site is now open to Linux: http://www12.statcan.ca/IRC/english/advisory_e.htm -- John Lange OpenIT ltd. www.Open-IT.ca (204) 885 0872 VoIP, Web services, Linux Consulting, Server Co-Location

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OpenWrt problem with tftp
by John Lange 18 May '06

18 May '06

I believe that I'm having a problem with the OpenWRT and tftp. I'm trying to fetch a file outside of the OpenWRT firewall using tftp but on the server side I see these messages: in.tftpd[26104]: tftpd: read(ack): Connection refused The client just times out. I suspect its a nat issue with the OpenWRT perhaps related to the fact the OpenWRT listens on a tftp port for uploads of firmware? Or is tftp generally tricky through nat? I can't see why it would be. Is there some kind of iptables parameter that needs to be added? Scant little comes up on google for iptables, nat and tftp. -- John Lange OpenIT ltd. www.Open-IT.ca (204) 885 0872 VoIP, Web services, Linux Consulting, Server Co-Location

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Fedora virtual screen
by schwartz 18 May '06

18 May '06

Well, I can get a mild version of a virtual screen on my Fedora system on the GUI with Ctrl Alt - That's a minus sign after the Alt. The software screen is larger than the area of the monitor's screen and you can view the areas outside of the monitor screen by using the mouse. On the old Slackware distributions you could get a software virtual screen about 50 % larger than the monitor's screen. I found that useful and I miss it since neither Slackware 10, nor Fedora seem to have it. Or maybe I don't know how to activate it. I hope that explains it.

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Segate 750G drives now available
by John Lange 16 May '06

16 May '06

Because it was a topic of discussion at the last MUUG meeting I thought I'd post that the Seagate drives are now available. I got a email from a supplier indicating: Seagate Barracuda ST3750640AS 750GB Sata $523.00 Note: that is a wholesale price and we do not sell drives. This is not an advertisement so please don't contact me to buy them. Its only meant to give you an idea of what the price will be when they hit the shelves. -- John Lange OpenIT ltd. www.Open-IT.ca (204) 885 0872 VoIP, Web services, Linux Consulting, Server Co-Location

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Fedora virtual screen
by schwartz 16 May '06

16 May '06

Is there a way to get a virtual screen with Fedora? Is there someplace on the web that tells how?

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Binding device names to MAC addresses
by Adam Thompson 10 May '06

10 May '06

Further to the discussion about binding ethernet devices to specific ethernet cards... I appear to have been mistaken - I cannot find any consistent way to tell the kernel to attach "eth0" to, say the device "02:01.0" (which in my system is: Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 02)"). If you use hotpluggable devices (e.g. USB ethernet adapters) then there may be a way but that's through the hotplug scripts, not through the kernel. However, the mechanism for mapping specific hardware MAC addresses to device names (eth0, eth1, eth2, etc.) is actually quite straightforward. /sbin/nameif (from net-tools) and /sbin/ifrename (from wireless-tools) both do the same trick, as far as I can tell. I have no idea how it massages kernel innards in this way, but whatever - it apparently just works. -Adam Thompson athompso-muug(a)athompso.net

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Mac OS X Boot Time Keyboard short cuts (fwd)
by gedetil＠cs.umanitoba.ca 10 May '06

10 May '06

Hi folks. Just passing along this message from Doug Hamilton... -- Gilbert E. Detillieux E-mail: <gedetil(a)cs.umanitoba.ca> Dept. of Computer Science Web: http://www.cs.umanitoba.ca/~gedetil/ University of Manitoba Phone: (204)474-8161 Winnipeg MB CANADA R3T 2N2 Fax: (204)474-7609 ---------------------------------------------------------------------------- To: Gilbert Detillieux <gedetil(a)cs.umanitoba.ca> From: Doug Hamilton <doug_hamilton(a)umanitoba.ca> Subject: Mac OS X Boot Time Keyboard short cuts Date: Tue, 9 May 2006 23:48:40 -0500 Hi Gilbert, There was a request by one of the members that I submit to the MUUG mail-list some of the commonly used Mac OS X keyboard short cuts which can be used at boot time. Since I'm not a member of the MUUG mail-list, I thought I could submit them to you, and when you have a moment you could submit them for me. 1.) Boot into Single User Mode: Apple + S keys 2.) Boot using a bootable CD/DVD already placed into the main optical drive (includes non Mac OS X disks): Apple + C keys 3.) Eject all removal media of all drives: Mouse Button 4.) List all bootable volumes via built-in boot manager (this includes bootable Mac OS X network volumes): Alt/Option key For the keyboard combinations to work, they must be pressed and held down after the initial boot chime is heard, and must continue to be held until the desired option appears (e.g. Single User Mode, keep holding the Apple+S keys until the terminal prompt appears). It was an very informative evening, the MythTV presentation was very interesting. Regards, Doug ------------- Doug Hamilton, BA, MA, APP Senior Computer Consultant Computers-on-Campus; Univ. of Manitoba 204-474-6196 (Ph.) 204-474-7556 (Fax) http://www.umanitoba.ca/bookstore/

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Roundtable May 2006