[PLUG] Global Free HW mtg BerkeleyTIP - Re: Definitive Guide to Open Source HW projs - 2009
Great link, Mike. :) Man, this is _exactly_ what I've been wanting to find for the Free HW aspect of the global Free SW, HW Culture group, BerkeleyTIP. All u free hw folks, come discuss this at this weekend's global meeting, via VOIP, Sunday Jan 3. Announcement to PLUG hopefully shortly, (ie as soon as I can create time.). http://sites.google.com/site/berkeleytip/hardware http://sites.google.com/site/berkeleytip On Thu, 17 Dec 2009 18:02:57 -0800, "Mike Connors" said: > "Each year we do a guide to all open source hardware and this year there > are over 125 unique > projects/kits in 19 categories, up from about 60 in 2008, more than > doubling the projects out there! > - it's incredible!" > > http://blog.makezine.com/archive/2009/12/open_source_hardware_2009_-_the_def.html > > ___ > PLUG mailing list > PLUG@lists.pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
[PLUG] Linux and driver blues...
I have qc-usb-0.6.6 source code from Sourceforge for my cheap web cam and it works with the 2.6.10 kernel, but I don't think it works with any later 2.6.x kernel. On the ReactOS forums, it has been suggested that Linux lacks a coherent driver model so that every driver has to be ported every time a new kernel comes out. Is this true? It has been suggested that Linux doesn't do well with proprietary drivers from one kernel to the next. I have yet to see ReactOS use anything that Linux can't use without crashing, so maybe the ReactOS community is being a bit premature to be knocking Linux. On my PII system with the built in ISA sound card, I found that turning the Monorail 3D Audio on causes Slackware to crash during boot. Turn the audio off in the bios, Slackware boots like a charm. Why did Monorail integrate junk into an otherwise decent Pentium II motherboard? Why didn't they integrate a standard sound blaster? Where is the Linux kernel going in the future as far as drivers are concerned? It seems right now like a lot of stuff is broken. I hate to see stuff break between an old release in the current stable kernel series and a newer release in that series. I guess it is a lot to ask that someone fix the driver for an ISA sound card since ISA has been gone a long time. Concerning hardware not working with Linux. Say I know an EE and know about a business that could potentially make PCI cards. Is it possible to make say sound cards and release the design without defeating one's opportunity to profit from the work? Is releasing a hardware schematic with the hardware under a license that says, "you are not permitted to use these schematics to build the hardware without explicit permission from the manufacturer," a reasonable way to do business? If the schematics to popular hardware exist and are free for the owners of said hardware, someone will probably write a Linux driver for it. For that matter, someone may write a driver for Syllable, Haiku, Freedos, etcetera. ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Fan probs on Thinkpad T60?
I once fixed a noisy graphics card fan by following the following: http://articles.techrepublic.com.com/5100-10878_11-5034842.html I upgraded the oil to synthetic from sewing machine, as mama's sewing machine oil is likely to be vegetable based and evaporate much faster than synthetic. -- Patrick Timlick On Tue, Dec 29, 2009 at 2:46 PM, Mike Connors wrote: > I've read some threads on this, but just wondering if anyone locally has > run into any of these problems? > > 1. Fan continuously runs >- I did download some ibm-acpi fan util, but the fan continues to > run all the time. > > 2. The fan has become annoyingly loud. >- Has anyone replaced the fan or taken apart the laptop to clean it > out, etc? > > Thanks, > > Mike > ___ > PLUG mailing list > PLUG@lists.pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > -- p.j.timl...@ieee.org www.timlick.com 503-476-3119 10990 NE Paren Springs. Dundee OR 97115 ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Troubleshooting DHCP...
Galen Seitz wrote: > 10BASE-T and 100BASE-TX only require 2 pairs. There was a version of > 100Mbit that required 4 pairs(100BASE-T4), but I believe it is > obsolete. Anyone still using 100BASE-T4 would almost certainly be > aware of that fact. > http://en.wikipedia.org/wiki/Ethernet_over_twisted_pair > http://en.wikipedia.org/wiki/Fast_Ethernet#100BASE-T4 > > Gigabit ethernet(1000BASE-T) requires 4 pairs.). In its typical configuration, 100BASE-TX uses one pair of twisted wires in each direction, providing 100 Mbit/s of throughput in each direction (full-duplex). Which means that the link could be good, but the cable wouldn't support full-duplex mode. So in theory the NIC might support full-duplex but the Ethernet cable w. a broken wire doesn't. And then you have a duplex mis-match between the 2 end devices. You drop in the 10-base-T hub, which most likely doesn't support auto-neg / full-duplex and it magically works. If I recall, the Orig Poster said he did see Ethernet errors... ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Troubleshooting DHCP...
I believe the following may useful and/or interesting: 100BASE-CX (STP) is only spec'd for 25 meters (82 feet). (Same for 1000BASE-CX, 25 meters.) 100BASE-TX uses two pairs UTP, Cat5 or better, 100 meters. 1000BASE-T needs four pairs UTP, also Cat5 or better, 100 meters. 1000BASE-TX uses two pairs UTP but requires Cat6, 100 meters. Note that most gigabit stuff is 1000BASE-T. I believe the original plan was that two pairs would be cheaper than four but 1000BASE-T won out due to compatibility with legacy wiring, which pretty much is four pairs anyway. NealS ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Troubleshooting DHCP...
Patrick J. Timlick wrote: > I think 10Mbit ethernet requires 2pairs, 100mbit requires 4 pairs, perhaps > you broke a pair or two during installation. > > See http://www.derose.net/steve/guides/wiring/#phone . > > I used this guide to run reliable 10Mbit Ethernet and an analog phone line > through 8 pair Cat 3 buried under a driveway. My run is only about 50 feet, > however. 10BASE-T and 100BASE-TX only require 2 pairs. There was a version of 100Mbit that required 4 pairs(100BASE-T4), but I believe it is obsolete. Anyone still using 100BASE-T4 would almost certainly be aware of that fact. http://en.wikipedia.org/wiki/Ethernet_over_twisted_pair http://en.wikipedia.org/wiki/Fast_Ethernet#100BASE-T4 Gigabit ethernet(1000BASE-T) requires 4 pairs. -- Galen Seitz gal...@seitzassoc.com ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Troubleshooting DHCP...
Patrick J. Timlick wrote: > I think 10Mbit ethernet requires 2pairs, 100mbit requires 4 pairs, perhaps > you broke a pair or two during installation. > > See http://www.derose.net/steve/guides/wiring/#phone . > > I used this guide to run reliable 10Mbit Ethernet and an analog phone line > through 8 pair Cat 3 buried under a driveway. My run is only about 50 feet, > however. > > -- Patrick Timlick > +1 Patrick's theory! ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Troubleshooting DHCP...
I think 10Mbit ethernet requires 2pairs, 100mbit requires 4 pairs, perhaps you broke a pair or two during installation. See http://www.derose.net/steve/guides/wiring/#phone . I used this guide to run reliable 10Mbit Ethernet and an analog phone line through 8 pair Cat 3 buried under a driveway. My run is only about 50 feet, however. -- Patrick Timlick Cat5e On Wed, Dec 30, 2009 at 3:46 PM, Joe Pruett wrote: > > On a hunch after verifying that it still works when I use a 10Mbit hub, > > I replaced the hub with a crossover coupler. That is, I used something > > that is almost equivalent to a 100Mbit hub with 2 ports. It isn't > > working where I'm seeing the same symptoms. > > > > What could be making this work at 10Mbit but not at 100Mbit? The first > > line in the first building is 100' of Cat5e UTP cable, the second line > > is 90' of at least Cat5 STP cable. > > > > I'll have to check the lights on both ends. It just seems odd, I have > > a Netgear FA311 nic on both ends so they should be able to talk to each > > other. > > > > I have a new Netgear switch, but I don't want to open it unless I can't > > get this working. > > > > I wish I had some way of verifying that the line can operate at > > 100 Mbps. > > > > I'm wondering if the Cat5 STP cable is having problems. > > stp is actually more of a problem for long runs than utp is. do you have > the shield grounded at just one end? if not, you could have a lovely > ground loop going on. > ___ > PLUG mailing list > PLUG@lists.pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > -- p.j.timl...@ieee.org www.timlick.com 503-476-3119 10990 NE Paren Springs. Dundee OR 97115 ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Troubleshooting DHCP...
> On a hunch after verifying that it still works when I use a 10Mbit hub, > I replaced the hub with a crossover coupler. That is, I used something > that is almost equivalent to a 100Mbit hub with 2 ports. It isn't > working where I'm seeing the same symptoms. > > What could be making this work at 10Mbit but not at 100Mbit? The first > line in the first building is 100' of Cat5e UTP cable, the second line > is 90' of at least Cat5 STP cable. > > I'll have to check the lights on both ends. It just seems odd, I have > a Netgear FA311 nic on both ends so they should be able to talk to each > other. > > I have a new Netgear switch, but I don't want to open it unless I can't > get this working. > > I wish I had some way of verifying that the line can operate at > 100 Mbps. > > I'm wondering if the Cat5 STP cable is having problems. stp is actually more of a problem for long runs than utp is. do you have the shield grounded at just one end? if not, you could have a lovely ground loop going on. ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Fan probs on Thinkpad T60?
On Tue, Dec 29, 2009 at 02:46:56PM -0800, Mike Connors wrote: > I've read some threads on this, but just wondering if anyone locally has > run into any of these problems? > > 1. Fan continuously runs >- I did download some ibm-acpi fan util, but the fan continues to > run all the time. My T60 fan does run all the time (when it is not suspended). But not loudly . According to gnome-sensors (in the panel) and ibm-acpi, the fan is running at 3279rpm and the CPU is at 46C, the load average is 0.1 and the machine is idle except for this open xterm. > 2. The fan has become annoyingly loud. >- Has anyone replaced the fan or taken apart the laptop to clean it > out, etc? Not on the T60, but on older thinkpads. This helps the fan work more efficiently, hence slower. And the cruft can also get in the fan blades and make noise. It may be possible to blow the cruft out with compressed air - access is under the keyboard, IIRC, you must remove that to blow the stuff out the side exhaust. Keith (ps - reply off the list - what video chipset do you have, and what driver are you using with it? I'm hoping there is something faster than the radeon driver...) -- Keith Lofstrom kei...@keithl.com Voice (503)-520-1993 KLIC --- Keith Lofstrom Integrated Circuits --- "Your Ideas in Silicon" Design Contracting in Bipolar and CMOS - Analog, Digital, and Scan ICs ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
