On Sunday 08 December 2013 08:10:03 Mark Wendt did opine: > On Sun, Dec 8, 2013 at 1:00 AM, Rafael Skodlar <ra...@linwin.com> wrote: > > On 12/07/2013 07:07 PM, Jon Elson wrote: > > > On 12/07/2013 07:44 PM, Gene Heskett wrote: > > >> Generally speaking, both pata and sata dvd-rw drives have > > >> been Just Works(TM) for 3 or more years. If it doesn't, > > >> I've found its a good chance the drive is funkity, and a > > >> fresh $25 drive from Wallies plugs in and works. Not at > > >> all the problem child they were 10 years back up the log. > > > > > > OK, great! I used to scan the compat. lists before buying > > > anything the least bit special, but CD burners and sound > > > cards were especially difficult to find ones that were > > > Linux compatible. Glad I don't have to fret over that > > > stuff anymore. > > > > > > Thanks, > > > > > > Jon > > > > I haven't had problems for over 10 years now but why bother with boot > > from CD-ROM or DVD anymore? Modern motherboards boot from USB device. > > You simply copy the same image to USB memory stick and boot from it. > > > > Same goes for writing data or backups. USB memory sticks keep getting > > cheaper with bigger capacity, and you don't need special device to use > > them. 32GB go for less than $20 these days. Beats everything including > > BlueRay drives. > > > > It's also easier to carry 2 or 3 USB sticks in the pocket than DVDs. > > > > As far as compatibility goes, no problem with sound but Nvidia chip > > based video cards are the biggest pain to setup in my experience. Even > > Linus has strong opinion about them. > > > > -- > > Rafael > > I'm with Rafael and Gene. I live and work with Unix and Linux during > the week at my real job. About the only real problems I run into any > more building and configuring machines is with the video cards and > drivers. Pretty much everything else, as Gene sez "Just Works" these > days. And NVidia is definitely the worst of the bunch when it comes to > getting a reliable display with their proprietary driver. > > Unfortunately, where I work, thumb drives have been more or less > outlawed, due to eedjits bringing in viruses from other places. > > Mark
I no longer have that work responsibility, but let me chime in and say, for the benefit of any nvidia video card lovers coming in here and getting acquainted with linuxcnc, that the cards generally work, even for linuxcnc's limited graphical needs, on the nouveau driver. You will have very poor latency's with the nvidia driver, and may well wreck parts as the nvidia driver, to get the performance it thinks it needs, has been known to lock out the IRQ's linuxcnc needs at nominally 20-50 microsecond intervals, for periods in excess of 200 milliseconds. So you can't move steppers at more than 2 or 3 ipm without stalls, or servo's any faster than you can have them moving unsupervised, probably no faster in the real world than steppers before you start seeing marks on your parts from gouges that might enable. ATI's cards, using the resolution limiting vesa driver, will generally work, but the ati drivers, whatever they are calling them this week, are almost as poisonous, and just as big a PITA to setup. I was never able to run a BASE_THREAD faster than 50 microseconds on one, on an older 1.4Ghz Athlon box, whereas on the now discontinued intel D525MW board with its onboard video, I am running 2 machines at 24 microseconds. Steppers run much smoother, and my lathe, using about 37.5 volts to the drives, can move its Z at 60 ipm, and its X at 30. My mill, with only 28 volts, is all tapped out at half that or less. However, considering the limited revs and power of its quill drive, thats plenty more than it takes to break a solid carbide 1/4" bit. I am hungrily watching these talented folks as they go about creating a linuxcnc that runs on the beaglebone black. Using its PRU's for stepper generators, it is bypassing the communication bottleneck the use of the parport enforces, and will unlock a lot of multi axis control talent linuxcnc has. Someone here announced an I/O cape for it a week or so back, but didn't mention the price. We need to know that too you know. New subject: I thought, for an hour or so, that I had found my spindle power answer for that toy mill on fleabay, in a 400 watt, 12k revs ready made spindle that was 52mm in diameter and I could drop it right into the spindle hole in the Z sled, till I went out and measured a spare casting and found it was only a 49mm bore for the spindle cartridge. So there went my dreams of having an interchangeable spindle. I would have to swap the complete sled casting, a major tear down that would be best done by building a duplicate Z drive, post and all and swapping the whole works. That would never be a 10 minute job even if the post is included, but that would take several hours off the swap by making them complete assemblies, 4 bolts and a bunch of plugs and a heavy lift. Perhaps an hour with a cheap electric hoist as its more than my back can handle. No overhead for the hoist in that small shed though. That background grinding noise? Me thinking with old rusty wet ram. ;-) Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> If you give a man enough rope, he'll claim he's tied up at the office. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
