- luv-main - luv.asn.au

Good starting point for learning about IPv6?
by Anthony 28 Jul '18

28 Jul '18

Hey folks, Where's a good place to learn about IPv6? I've *mostly* got my head around IPv4 these days, and my ISP still only has an unsupported 6rd gateway which I've tried with momentary success on my router. I understand that the address space is 128 bits vs 32, that successive colons mean 0000 between them, that devices can have "local" and "global" scoped addresses, and it's *supposed* to do away with NAT... but that's about as far as I've gotten :) A server I lease overseas has an IPv6 address block assigned to it, and I'm struggling to figure out how I'm supposed to assign a reverse DNS to it, so Google and friends don't flag it for the MTA not having a reverse lookup (for now, I just lock it to IPv4)... I figured I might as well learn more about how it works, different to IPv4.. Any practical pointers?

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Fwd: Pass along this special subscription offer to your fellow LUG members.
by Andrew Pam 28 Jul '18

28 Jul '18

Date: Sat, 28 Jul 2018 06:06:16 +1000 From: Linux Journal Subscription <subs(a)linuxjournal.com> Reply-To: subs(a)linuxjournal.com Special rate for fellow LUG members Subscribe Now <https://linuxjournal.cmail20.com/t/j-l-nihkko-jjjlyklulk-r/> To our Linux User Group Panel, We'd like to provide a special introductory subscription rate of for you to pass along to all of your fellow Linux User Group members: $24.50 for a one-year subscription ($10 off our regular rate). Please feel free to post or forward this link <https://linuxjournal.cmail20.com/t/j-l-nihkko-jjjlyklulk-y/> (https://pubservice.com/Subnew2page.aspx?PC=LJ&pk=M8ALUGS) to anyone you think would be interested in saving $10 off our regular subscription price. Offer expires August 31, 2018. We're working hard to bring you the best long-form, technical journalism in the open-source space, and look forward to continuing to serve you. Your friends at /Linux Journal/ LUG MEMBER NEW SUBSCRIPTION <https://linuxjournal.cmail20.com/t/j-l-nihkko-jjjlyklulk-j/> Facebook <https://linuxjournal.cmail20.com/t/j-l-nihkko-jjjlyklulk-t/> Twitter <https://linuxjournal.cmail20.com/t/j-l-nihkko-jjjlyklulk-i/> YouTube <https://linuxjournal.cmail20.com/t/j-l-nihkko-jjjlyklulk-d/> Linux Journal, 9 5 9 7 Jones Rd #331, Houston, TX 77065

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Today is SysAdminDay :)
by David Zhan 27 Jul '18

27 Jul '18

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intermittent sound on Ubuntu 16.04
by stripes theotoky 23 Jul '18

23 Jul '18

We hear the chimes when the computer starts but then sometimes there is sound sometimes there isn't, sometimes when there is sound it vanishes after the computer suspends. Everything else about the computer seems to be working fine. It is a dell laptop running ubuntu 16.04. Have worked though the first two steps in this with no effect. About to start working on step 3 but in if anyone has any better ideas they would be most welcome. https://help.ubuntu.com/community/SoundTroubleshootingProcedure Could bring the laptop to a meeting in Melbourne if someone could look at it for me. I have lost my voice and may not speak on doctors orders so we would have to discuss the problem even if face to face in writing. Anything to make life more complicated than it already is. All the best -- Stripes Theotoky -37 .713869 145.050562

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Save and restore window positions with openbox
by Kim Oldfield 23 Jul '18

23 Jul '18

Hi, Does anyone know how I can save (and later restore) the positions of my windows on my screens? On my laptop I'm running openbox as my window manager on Ubuntu 18.04. At my desk I have a docking station with 2 external monitors. I've configured keyboard shortcuts in openbox to configure my screens appropriately for docked or undocked configuration (using xrandr). Whenever I undock all my windows get moved over to fit on the laptop screen - so when I dock the laptop again the windows are in the wrong locations, and I have to manually position them in the appropriate locations for my external monitors. What I would like is a way to save my window positions before undocking, and then a way to restore these window positions when I dock again later. Does anyone have a solution or suggestions to help with this problem? Regards, Kim

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real time log watching
by Russell Coker 16 Jul '18

16 Jul '18

What's a good real-time log watching program? This is something I've wanted for a while but not had the inclination to get it going. The thing that finally made me want to do it is when my workstation gave the below log messages and decided to stop supporting USB 3.0 ports. As the ports that are most convenient for connecting my keyboard and mouse are USB 3.0 that was inconvenient. Removing the xhci modules and loading them again fixed the problem. So what I want in this instance is a program that will detect one of the below messages and then run a script that will run some rmmod and modprobe commands to fix it. I want it to know which log entries it has dealt with to avoid performing the operation twice (which would cause problems) or maybe have a list of log messages in the problem solved category. Any suggestions? [18408.111698] xhci_hcd 0000:06:00.0: xHCI host not responding to stop endpoint command. [18408.111716] xhci_hcd 0000:06:00.0: xHCI host controller not responding, assume dead [18408.111738] xhci_hcd 0000:06:00.0: HC died; cleaning up [18408.111747] xhci_hcd 0000:06:00.0: Timeout while waiting for configure endpoint command -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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NBN Cabling responsibilities and CSG
by Tom Robinson 11 Jul '18

11 Jul '18

I'm hoping someone here may have some insight to cabling responsibilities under the NBN and also my expected rights under the Customer Service Guarantee (CSG). I was talking to Internode today about transitioning to the NBN and had a few surprises: 1. I will now be responsible for the cabling from my wall socket to some as yet undefined location in the street (sales guy couldn't tell me where that was). 2. I have to waive my rights to the CSG. I have had two occasions in the last year when I've had to call Telstra to come and fix my line issues (which they did at no cost to me). What can I expect under the NBN? -- Tom Robinson 19 Thomas Road Mobile: +61 4 3268 7026 Healesville, VIC 3777 Home: +61 3 5962 4543 Australia GPG Key: 8A4CB7A7 CONFIDENTIALITY: Copyright (C). This message with any appended or attached material is intended for addressees only and may not be copied or forwarded to or used by other parties without permission.

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swap vs cache
by Russell Coker 10 Jul '18

10 Jul '18

# free -m total used free shared buff/cache available Mem: 7962 2212 498 533 5251 4942 Swap: 10719 1732 8986 The above is from my workstation. It's running KDE, Chrome, KTorrent, and not much else. My understanding of the above is that most RAM is being used for cache and it's quite likely that this achieves the goal of reducing the number of storage accesses. The problem is that I don't want to reduce the number of storage accesses, I want to improve the performance of interactive tasks. Ktorrent is configured to only upload 60KB/s so a lack of caching of the torrents shouldn't prevent it from uploading at the maximum speed I permit. When large interactive programs like Chrome and Kmail get paged out it causes annoying delays when I want to perform what should be quick tasks like replying to a single message or viewing a single web page. Any suggestions as to how to optimise for this use case? I already have swap on one of the fastest SSDs I own and don't feel like buying NVMe for this purpose or buying a system with more RAM, so software changes are required. When replying please feel free to diverge from the topic. I think this is an area where most Linux users know less than they would like so randomly educational replies will be appreciated even if they don't help me with this problem. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Activities/CompulsoryRouters - FSFE Wiki
by Andrew McGlashan 03 Jul '18

03 Jul '18

Wow! I worried that something like this may have been put in place with our NBN..... it still might be some day, but the mess that Turncoat has made of it means that it might be a bit harder. https://wiki.fsfe.org/Activities/CompulsoryRouters Cheers

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Kindness and open-source projects
by Andrew Pam 30 Jun '18

30 Jun '18

"An open-source community comes about once there is an outside contribution to a project; one-person projects aren't really a community. Once you have that, one question is what the purpose of that community is. Collaborating on the maintenance of the project is clearly part of it, but that needs to be balanced with having some fun. If there is no fun involved, people are likely to leave; if there is too much fun, not much will actually get done and the project will suffer." https://lwn.net/SubscriberLink/758363/9a1f5248b1be96cd/ Note that this also applies to some degree to user groups such as LUV! Share and enjoy, Andrew

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