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M.2
by Russell Coker 25 Jul '16

25 Jul '16

https://en.wikipedia.org/wiki/M.2 The latest standard for connecting SSDs is M.2. It's small and doesn't need much power which among other things makes it good for systems with plenty of spare PCIe slots but no spare SATA connectors or SATA power connectors. http://www.intel.com/content/www/us/en/solid-state-drives/ssd-540s-series-m… spec.html The Intel 540 series of SSDs comes in a M.2 variant that has B and M notches. Does anyone know where I can get a PCIe card that takes at least 1 (and preferrably 2) B+M M.2 cards and works with Linux? I want to install 2 of the Intel 540 M.2 SSDs in one system. I can use 2*PCIe slots if necessary but would prefer to use only 1. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Linux power meter
by Brian May 21 Jul '16

21 Jul '16

Hello, Just wondering if there was such a thing as a 240V power meter, e.g. something that looks like: http://www.jaycar.com.au/mains-power-meter/p/MS6115 ...but can feed the usage figures into a Linux system (e.g. Raspberry pi) or something (would be happy with Arduino) for recording or graphing or something. Or am I dreaming? Ok, to answer my own question, google has the following results: * https://openenergymonitor.org/emon/buildingblocks/how-to-build-an-arduino-e… * http://www.instructables.com/id/ARDUINO-ENERGY-METER/ * http://www.instructables.com/id/Arduino-home-energy-monitor-shield/ Still researching the above. However... something already prebuilt, calibrated, and maybe even approved by local authorities would be better... Ideally I would like to be able to monitor the power consumption - individually - of the major power users in my house (e.g. fridge, dishwasher, maybe stove if possible, computer servers, etc) in an automatic manner (so writing down the figures on a daily basis doesn't count). Which would mean having a number of monitoring points, ideally as cheap as possible. Also, ideally I am interested in something that is available today, not something that may or not be provided by my power distributor at some random point in time in the next 10 years. So far I have seen stuff like this: https://www.element14.com/community/community/raspberry-pi/blog/2013/04/05/… ... but need something that works in Australia. Regards -- Brian May <brian(a)linuxpenguins.xyz> https://linuxpenguins.xyz/brian/

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USB storage performing unusually slowly
by Toby Corkindale 18 Jul '16

18 Jul '16

Hi, I've hit a strange issue with a new USB storage device. (Corsair Slider X2 64GB) On a Windows 10 laptop, it'll happily get ~75mbyte/sec writes.[1] Reads are even faster. However on my Linux workstation the best I can get is 27 mbyte/sec, and the usual speed more like 9-10 mbyte/sec. ie. Awful. Reads aren't much better, at 37mbyte/sec. The same workstation can happily read and write very fast to other USB 3 storage devices, so I know the USB 3 ports are active. I've tested with vfat, ext4, btrfs and ntfs filesystems, plus just plain using "dd" to write to the raw device. In all cases, performance is terrible. I've played with mount options (sync, async, direct io, journal modes, etc) and it doesn't make a huge difference. I don't suppose anyone else has hit this, and might have a fix? (I'll test on an alternative Linux system tonight, with a slightly different Linux kernel and motherboard.) -Toby 1: Actual writes, not cached -- which I think is Windows default for removable storage. But tested by writing far more data than the laptop has RAM, followed by quickly selecting "Safely eject the device".

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Micro server
by stripes.theotoky＠googlemail.com 17 Jul '16

17 Jul '16

I am interested in your micro server if it hasn't gone already. Will be near Nottingham from next week. I want to experiment with a NAS box and this should be good for that. Regards Stripes Sent from my BlackBerry® wireless device

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free HP micro server
by Russell Coker 17 Jul '16

17 Jul '16

I have a HP micro server to give away. Not sure of it's condition. It has 4 drive bays and 3 caddies (should get a 4th next meeting) for SATA or SAS disks. I can bring it to a LUV main meeting or beginners' SIG. Contact me off-list if you are interested. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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10GigE
by Russell Coker 07 Jul '16

07 Jul '16

One of my clients is getting a server that is not going to immediately have 10GigE but will probably have it in the not too distant future. Which of the following 10GigE cards from Dell would be most suitable? Note that the 10GigE switch is yet to be purchased. Some of these cards appear to use fiber and some use twisted-pair. Obviously buying a network adapter now is going to constrain the choice of switches in the future. Any suggestions? Emulex OneConnect OCe14102-N1-D 2-port PCIe 10GbE NIC [$574.20 or $6/week-1] QLogic 57810 DP 10Gb DA/SFP+ Converged Network Adapter [$478.50 or $5/week-1] QLogic 57810 Dual Port 10Gb Base-T Network Adapter [$784.30 or $8/week-1] Mellanox ConnectX-3 Pro Dual Port 10 GbE SFP+ PCIE Adapter Full Height, V2 [$762.30 or $8/week-1] Intel Ethernet X540 DP 10GBASE-T Server Adapter [$922.90 or $9/week-1] Intel X520 DP 10Gb DA/SFP+ Server Adapter [$705.10 or $7/week-1] Intel X550 Dual Port 10G Base-T Adapter, Full Height [$860.20 or $9/week-1] Intel X710 Dual Port 10Gb Direct Aattach, SFP+, Converged Network Adapter [$705.10 or $7/week-1] Intel X710 Quad Port 10Gb Direct Aattach, SFP+, Converged Network Adapter [$1,144.00 or $12/week-1] -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Re: Photobooth help
by Andrew Greig 05 Jul '16

05 Jul '16

Hi Glenn, SUCCESS! Thankyou. Even the printer is working correctly. My daughter will love this, and I am very grateful, and moreso for the education. I can get some sleep now. Cheers Andrew Greig On 17 Jun 2016 9:39 pm, "Glenn McIntosh" <neonsignal(a)meme.net.au> wrote: > On 17/06/16 19:04, Andrew Greig wrote: > > Here is the output from a cheese webcam photo > > andrewg@linux-ltv0:~> inotifywait -m ~/Pictures/Webcam > > Setting up watches. > > Watches established. > > /home/andrewg/Pictures/Webcam/ CREATE 2016-06-17-185734.jpg.C4S7IY > > /home/andrewg/Pictures/Webcam/ OPEN 2016-06-17-185734.jpg.C4S7IY > > /home/andrewg/Pictures/Webcam/ MODIFY 2016-06-17-185734.jpg.C4S7IY > > /home/andrewg/Pictures/Webcam/ CLOSE_WRITE,CLOSE > > 2016-06-17-185734.jpg.C4S7IY > > /home/andrewg/Pictures/Webcam/ MOVED_FROM 2016-06-17-185734.jpg.C4S7IY > > /home/andrewg/Pictures/Webcam/ MOVED_TO 2016-06-17-185734.jpg > > I have no idea why cheese would append the extra characters > > It isn't uncommon for programs to create a temporary and then only > rename when the file is complete, perhaps this was changed in an update > to cheese. > > Anyway, it just means you would set the inotifywait to watch for the > moved_to instead of the close_write, so that you pick up the final file, > ie: > > inotifywait -m -e moved_to ~/Pictures/Webcam --format "%w%f" > etc > > Glenn > -- > sks-keyservers.net 0x6d656d65 > >

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Brother scanner driver
by Bob 17 Jun '16

17 Jun '16

Hello all, I have set a box for a friend running Kubuntu 16.04 with a brother MF7680DW multifunction printer/scanner attached via usb. I have installed the latest drivers from the Brother website and the printer works fine but the scanner is not found by any scanning program. Research indicates that there is a permissions issue error. The solution is to run |sudo chmod 666 /dev/bus/usb/001/002 |which fixes the usb bus permissions problem and the scanner is found. Am I able to place this command somewhere so that it is executed on startup? How do I overcome the issue of needing root access? Thanks Bob

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Photobooth help
by Andrew Greig 16 Jun '16

16 Jun '16

Hi all, I have installed inotify-tools, and now the watch sets up nicely, but the print and move are not working andrewg@linux-ltv0:~> ./photobooth-hp Setting up watches. Watches established. lpr: Error - unable to access "/home/andrewg/Pictures/Webcam/2016-06-15-223028.jpg.8QE9IY" - No such file or directory mv: cannot stat ‘/home/andrewg/Pictures/Webcam/2016-06-15-223028.jpg.8QE9IY’: No such file or directory I don't know where the suffix after the .jpg is coming from, is that what is stopping the progress? Here is the script #! /bin/bash inotifywait -m -e close_write ~/Pictures/Webcam --format "%w%f" | \ while read filename; do lpr -P Photosmart_C5200 "$filename"; mv "$filename" ~/Pictures/Webcam/printed; done The print spool name is correct. Once the party is over I will play with Darktable and tethered shooting and specify a new Directory to watch. In theory the flash on the Eos should fire and give an outstanding result. Many thanks Andrew Greig

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Re: Photobooth script - needs help with inotify
by Andrew Greig 15 Jun '16

15 Jun '16

Thanks Glenn, As I recall it was you who helped me back then. When I promote Linux, I always talk about the community, and I use you as an example. You are right, it helps if the program is installed. I thought because the man file was there, that the program was also there. I have more work to do yet, but I will get on to it tonight. Again, thankyou Andrew Greig On 14 Jun 2016 11:19 pm, "Glenn McIntosh via luv-main" <luv-main(a)luv.asn.au> wrote: On 14/06/16 21:08, Andrew Greig via luv-main wrote: > I know that 4 years in Linux is a long time, so I was not surprised to > find that the script failed because the inotifywait command is no longer > recognised. I am not skilled in scripting but I did read the man file. The inotify-tools package is still available on Debian based distros and probably the others (though it may not be installed by default). Glenn -- sks-keyservers.net 0x6d656d65 _______________________________________________ luv-main mailing list luv-main(a)luv.asn.au https://lists.luv.asn.au/cgi-bin/mailman/listinfo/luv-main

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