Re: [Dorset] Debugging dnsmasq and dhcpd
Messages go to syslog as I've since found out. Apparently there is an address conflict but it doesn't show up until I've tried to connect several times. I'm confused. I'll look at this tomorrow. Sent from Blue On 29 Mar 2022, 18:11, at 18:11, Peter Merchant via dorset wrote: >On 29/03/2022 15:14, Terry Coles wrote: >> Hi, >> >> The system that I've been talking about for a few days seems to have >a problem >> with WiFi. It generally works OK the first time a user connects, but >after >> that the message 'Obtaining IP Address' is displayed for ever. What >I can't >> work out is how to debug this. Can anyone tell me where to find the >log file(s) >> for dnsmasq? >> >A quick search gets me: > >Ok then your are using hostapd and dnsmasq. For the clients >informations you can parse the 'leases' file of dnsmasq >in|/var/lib/misc/dnsmasq.leases| > >|I don't know whether the logfiles are close to it. | > >|In dnsmasq.conf I found:| > >|# For debugging purposes, log each DNS query as it passes through # >dnsmasq. #log-queries # Log lots of extra information about DHCP >transactions. #log-dhcp | > >|But I can't find any logfiles in rootfs partition. | >-- > Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 > Check to whom you are replying > Meetings, mailing list, IRC, ... http://dorset.lug.org.uk > New thread, don't hijack: mailto:dorset@mailman.lug.org.uk -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
Re: [Dorset] Debugging dnsmasq and dhcpd
On 29/03/2022 15:14, Terry Coles wrote: Hi, The system that I've been talking about for a few days seems to have a problem with WiFi. It generally works OK the first time a user connects, but after that the message 'Obtaining IP Address' is displayed for ever. What I can't work out is how to debug this. Can anyone tell me where to find the log file(s) for dnsmasq? A quick search gets me: Ok then your are using hostapd and dnsmasq. For the clients informations you can parse the 'leases' file of dnsmasq in|/var/lib/misc/dnsmasq.leases| |I don't know whether the logfiles are close to it. | |In dnsmasq.conf I found:| |# For debugging purposes, log each DNS query as it passes through # dnsmasq. #log-queries # Log lots of extra information about DHCP transactions. #log-dhcp | |But I can't find any logfiles in rootfs partition. | -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
[Dorset] Next Meeting - One Week Tonight
Hi, The next Meeting will be one week tonight Tuesday, 2022-05-04 20:00 using Jitsi. Details are as for the previous meetings, but they will be re-posted on the day. -- Terry Coles -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
[Dorset] Debugging dnsmasq and dhcpd
Hi, The system that I've been talking about for a few days seems to have a problem with WiFi. It generally works OK the first time a user connects, but after that the message 'Obtaining IP Address' is displayed for ever. What I can't work out is how to debug this. Can anyone tell me where to find the log file(s) for dnsmasq? -- Terry Coles -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
Re: [Dorset] Brother Laser Printers on (K)Ubuntu
On 29/03/2022 10:30, Terry Coles wrote: Hi, I currently have an excellent HP A3 Inkjet printer which does scan, copy and print very well, but costs an arm and a leg for ink. Not only does it appear to drink the stuff, a full set of cartridges are currently well over £100. My Birthday is coming up, so I thought that I would use that as an excuse to get a Laser Printer. I initially looked at HP, because their HPLIP package pretty much guarantees that any of their printers will work on Linux. However, at the cheaper end of the market they are all monochrome only and / or don't do double sided printing automatically. I print a lot of documents with coloured diagrams, so need both colour and double sided printing. At Which? there are three best buy colour Lasers; the HP Color LaserJet Pro M255dw at £799, another HP printer that only does manual double-sided and the Brother HL-L3230CDW, which does everything that I need. However, I've never owned a Brother printer. So what are the gotchas? Do Brother Printers generally work on Linux? Does anyone already own or have experience of this printer? Alternatively, can anyone recommend a laser printer that meets my requirements and also works well on Linux? I have a Brother HL 1212W wireless laser printer and have never had any trouble with it. It is only black and single sided. I seem to remember having to download the drivers from the brother support site but I have had it for a few years now. Peter M. -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
Re: [Dorset] Follow Up to my WMT Webserver Problem
On Tuesday, 29 March 2022 11:59:39 BST Hamish McIntyre-Bhatty wrote: > Hmm interesting. Are you not having the SSH connection issues to the > webserver when it's at your house then? That was the issue we were > originally debugging, and shouldn't have anything to do with either > nodogsplash or Android if I understand things correctly. That's fixed. I had accidentally set up the wrong default route during some earlier work. I've now discovered a timeout value in the config file for nodogsplash. The is a unitless number for the timeout while a client is connecting (called PreAuthIdleTimeout) and another for after he has connected (called AuthIdleTimeout). The docs suggest that these are in minutes, but while I was debugging, one of the clients was de-authenticated after 120 seconds instead of 2 hours. This gave me the clue that the number represents seconds so I increased the PreAuthIdleTimeout from 2 to 20 and things seem a lot better now. If this works, I'll probably change both to the equivalent number of seconds for the original values, so 120 for PreAuthIdleTimeout and 7200 for AuthIdleTimeout. The numbers were originally chosen to give the Visitor 2 minutes to work out what to do initially and 2 hours on site before he had to reconnect. I also have an intermittent issue connecting to the WiFi in the first place, so I may be back :-) -- Terry Coles -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
Re: [Dorset] Follow Up to my WMT Webserver Problem
On 29/03/2022 11:37, Terry Coles wrote: After realising that the problem had nothing to do with the VPN Server, I've done further investigation and the most likely cause of this is the check that all Android phones have to do before they will connect to a WiFi Network. On occasions I've caught an error from 'connectivitycheck.gstatic.com/ generate_204'. Sometimes I'm getting 'net::ERR_CONNECTION_ABORTED' and sometimes I get 'net::ERR_TIMED_OUT'. I've posted a typical screenshot at: https://hadrian-way.co.uk/Misc/Android_Screenshot_2022-03-29.jpg The trouble is that during WiFi connection checks a message is sent to that URL by the phone and if the response isn't received, then Android believes that there is no Internet access and (normally) flags this up to the user with an option to ignore before connecting. It seems that nodogsplash somehow gets into the middle of this sometimes and the Welcome splash screen doesn't get displayed. Even so, a user 'in the know' can still connect to the content by browsing to the Home Page, so the connection is still made. Unfortunately there will be no Visitors to WMT who are in the know. The trouble is that development of nodogsplash seems to be moribund, the last commits being about 2 years ago and there have been no issues added since October last year. I therefore suspect that I can't get much help from that source. Has anyone any thoughts on this? As mentioned elsewhere this problem isn't new; we just had less understanding of it 2-3 years ago and it was less prevalent. Before that, I used to display a notice on site which gave instructions on how to browse to the Home Page, but this was deemed to be too complicated and nodogsplash was installed to make it easier.. I don't really want to have to go back to the original approach if possible. Hmm interesting. Are you not having the SSH connection issues to the webserver when it's at your house then? That was the issue we were originally debugging, and shouldn't have anything to do with either nodogsplash or Android if I understand things correctly. Hamish -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
[Dorset] Follow Up to my WMT Webserver Problem
After realising that the problem had nothing to do with the VPN Server, I've done further investigation and the most likely cause of this is the check that all Android phones have to do before they will connect to a WiFi Network. On occasions I've caught an error from 'connectivitycheck.gstatic.com/ generate_204'. Sometimes I'm getting 'net::ERR_CONNECTION_ABORTED' and sometimes I get 'net::ERR_TIMED_OUT'. I've posted a typical screenshot at: https://hadrian-way.co.uk/Misc/Android_Screenshot_2022-03-29.jpg The trouble is that during WiFi connection checks a message is sent to that URL by the phone and if the response isn't received, then Android believes that there is no Internet access and (normally) flags this up to the user with an option to ignore before connecting. It seems that nodogsplash somehow gets into the middle of this sometimes and the Welcome splash screen doesn't get displayed. Even so, a user 'in the know' can still connect to the content by browsing to the Home Page, so the connection is still made. Unfortunately there will be no Visitors to WMT who are in the know. The trouble is that development of nodogsplash seems to be moribund, the last commits being about 2 years ago and there have been no issues added since October last year. I therefore suspect that I can't get much help from that source. Has anyone any thoughts on this? As mentioned elsewhere this problem isn't new; we just had less understanding of it 2-3 years ago and it was less prevalent. Before that, I used to display a notice on site which gave instructions on how to browse to the Home Page, but this was deemed to be too complicated and nodogsplash was installed to make it easier.. I don't really want to have to go back to the original approach if possible. -- Terry Coles -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
[Dorset] Brother Laser Printers on (K)Ubuntu
Hi, I currently have an excellent HP A3 Inkjet printer which does scan, copy and print very well, but costs an arm and a leg for ink. Not only does it appear to drink the stuff, a full set of cartridges are currently well over £100. My Birthday is coming up, so I thought that I would use that as an excuse to get a Laser Printer. I initially looked at HP, because their HPLIP package pretty much guarantees that any of their printers will work on Linux. However, at the cheaper end of the market they are all monochrome only and / or don't do double sided printing automatically. I print a lot of documents with coloured diagrams, so need both colour and double sided printing. At Which? there are three best buy colour Lasers; the HP Color LaserJet Pro M255dw at £799, another HP printer that only does manual double-sided and the Brother HL-L3230CDW, which does everything that I need. However, I've never owned a Brother printer. So what are the gotchas? Do Brother Printers generally work on Linux? Does anyone already own or have experience of this printer? Alternatively, can anyone recommend a laser printer that meets my requirements and also works well on Linux? -- Terry Coles -- Next meeting: Online, Jitsi, Tuesday, 2022-05-04 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
