IRC log of #cubox of Fri 28 Jul 2017. All times are in CEST < Back to index

08:46 jnettlet[m]> Love the design of the new fan I am testing. https://photos.app.goo.gl/scIjJHZf6LMXlfGB3
08:47 jnettlet[m]> but running full out it is just too loud. Will work on that
08:54 vpeter> Made from one piece of aluminium block?
09:07 jnettlet[m]> yes
09:12 Ke> jnettlet[m]: fake!!, I can see, because not all the ATX power connectors are even connected!!!
09:13 Ke> I guess it just collects all the 12V into a single line or something?
09:13 Ke> how is that heat sink attached to the board?
09:15 jnettlet[m]> what is fake?
09:15 Ke> never mind that
09:15 jnettlet[m]> :) okay
09:16 jnettlet[m]> the heatsink is connected with adhesive currently. I will 3d print a mount soonish
09:17 Ke> so it would likely fall off, if mounted vertically, I guess
09:17 Ke> ?
09:17 jnettlet[m]> temps in u-boot are 38, 44, 43
09:18 jnettlet[m]> yeah, until it mounted to the board.
09:18 jnettlet[m]> I just received it this AM...need some time
09:18 Ke> I guess there is a chance that you will share the mount design?
09:18 jnettlet[m]> I also need a better controller for it
09:18 jnettlet[m]> of course
09:18 Ke> thanks
09:19 jnettlet[m]> but I think I will need to get my own 3d printer. I have less and less time to get over to the Makerspace.
09:19 jnettlet[m]> the heatsink design fits perfect. gives nice access to all the jumpers and switches.
09:21 jnettlet[m]> just getting out my patchset to properly support NVMe for u-boot.
09:33 jnettlet[m]> okay that is emailed out.
10:06 topi`> jnettlet[m]: do you think you could sort out how to do proper PWM to the fan connector?
10:06 topi`> well, to be honest, for me the more important feature would be to control clocks in software (cpufreq)
10:07 topi`> allowing the board to comsume less power until needed
10:07 jnettlet[m]> All on the list.
10:21 topi`> :)
10:21 topi`> I could perhaps proceed with my idea of testing a Radeon card on the macchiato. I have pcie16 -> pciex1 adapters
10:22 topi`> first need to get tianocore working
10:36 Artox> ‎[12:33] ‎<‎topi`_‎>‎ I did not build this, it seems the builder was abuild@armada-8040 The deb?
10:36 Artox> Its kinda old now
10:39 Artox> it is the latest -mxbin branch of Marvell though, so idk
10:41 topi`> maybe they've moved development onto another branch?
10:41 topi`> or they're just happy with their stuff for now ;)
10:42 Artox> they have a -armada branch where they work in, but idk how generic / tested that is
10:42 Artox> https://github.com/MarvellEmbeddedProcessors/linux-marvell/tree/linux-4.4.52-armada-17.08
10:44 Artox> it'll be a few days before I try that though
10:59 jnettlet[m]> topi`: I just hacked up the pcie connector for my old Quadro card :)
11:02 jnettlet[m]> https://photos.app.goo.gl/MhZiVaikYQ85WpIi2
11:05 topi`> ouch
11:05 topi`> poor Quadro ;)
11:05 vpeter> Very creative :)
11:05 jnettlet[m]> there is virtually zero difference between x4 and x8 regarding performance in this class of card.
11:06 jnettlet[m]> even now you really only see a 10-20% drop in most GPU benchmarks going from x16 down to x4
11:06 jnettlet[m]> 4K...well that is a bigger difference
11:27 suihkulokki> hw hacking :)
11:28 suihkulokki> funny how the ebays pcie x16 -> x1 cables are sold as "bitcoin cable"
11:33 topi`> :D
11:33 topi`> nevermind that mining BTC on GPUs provided economically infeasible years ago
11:37 topi`> hmm, mining on multiple Cortex-A72 cores, how would that work out... when are we going to have those 32-core Armadas? ;)
11:46 topi`> btw if I want to have another gigabit rj45 on my Macchiato, can I use one of these 10gbps ports for gigabit, or do I need to buy a SPF module for gigabit copper?
11:47 topi`> https://www.amazon.com/StarTech-com-Cisco-SFP-GE-T-Compatible-1000Base-T/dp/B007UR0CZE <-- this costs over 60 dollars :(
11:58 topi`> hmm, macchiatobin wiki says it is either 10gbps or 1gbps:
11:58 topi`> Dual 10GbE (1/2.5/10GbE) via copper or SFP
15:46 jnettlet[m]> topi`: order from http://www.fs.com or find them used on ebay.
15:46 jnettlet[m]> much cheaper
15:48 topi`> do the linux drivers support forcing a 10gbps interface to 1gbps mode?
15:48 topi`> I should test this out, but right now only have a 100mbps hub here
16:50 vpeter> topi`: You still using hubs?
16:53 Artox> these things just don't die
16:59 vpeter> I have one to make network sniffing easier. Sometimes can be useful.
17:17 jnettlet[m]> topi`: yes with ethtool
17:18 jnettlet[m]> Although if you just insert a 1Gbps SFP module it will automatically negotiate down
17:31 topi`> Artox: hubs are cheap :)
17:31 topi`> actually I don't know if my gigabit D-Link is actually hub or a switch
17:32 topi`> "5-Port Gigabit Unmanaged Metal Desktop Switch", yes it is a switch
17:33 topi`> but it has too few ports for my office, I need to buy a bigger one
17:39 Artox> topi`: if you can buy some, sure
17:39 Artox> but switches are cheap too
17:39 Artox> if you don't require them able to switch maximum bandwidth (1Gbps duplex / port)