MobileRead Forums - View Single Post - Is there any known issue with Kindle and not finding wifi access?

Richy_T · 08-10-2017, 02:21 AM

Very weird thing happened today. I was attending a group meeting and I had prepared a modified version of a kindle weather station hack on a Kindle Touch to act as a display during the meeting. The app was running for three days at home with no issues. Not long before I left for the meeting, I realized that I wouldn't have access to my home wifi at the meeting over 40 miles away (d'oh) so I set the kindle up to access the hotspot on my phone and tested and everything was OK.

So I arrive at the meeting and turn my hotspot on and... The kindle is not connecting. In fact, when I go into the wifi menu, it scans and detect there being *no* wifi access points despite my phone being one, the restaurant having one and there being several other access points detectable by my phone in the region. I rebooted a couple of times including a couple of full hold-down-the-power-buttin reboots but the same thing. Eventually I gave up (not a biggie, I was just trying to show off).

So after the meeting, I drive the 40 miles home, check the kindle and there is the full list of local hotspots. Within minutes, I'm connected to my home one and the pseudo-weather app is updating again.

So I'm wondering what happened. I am wondering if perhaps there was an overwhelming radio signal that blocked out all the hotspots on the Kindle. Seems unlikely as the phone was picking up plenty but a couple of people were having trouble with the restaurant free access and this was in a fairly busy downtown area. Other alternatives I can think of could be too many local hotspots causing trouble (seems I would have heard about that by now though) or something weird in an SSID causing issues. Or maybe my kindle was just going crazy for an hour.

Before anyone suggests this should be in the developer thread because of the weather thing, I believe that is completely unrelated to the issue so I am posting it here.

Edit: I dug into the logs and I have to work out how to interpret the timestamps but I see that there are a lot of errors that look like this probably around the time that this was occurring:

Code:

150331:151730 wifid[7029]: W iw:scan:blen=8192:insufficient buffer
150331:151730 wifid[7029]: W iw:scan:blen=16384:insufficient buffer
150331:151730 wifid[7029]: W iw:scan:blen=32768:insufficient buffer

I also see some of this error. Was my kindle simply too hot and it refused to turn wifi on?

Code:

170809:152806 kernel: I papyrus:TempExceeded:temp=29:

That seems a little low to be cutting off wifi but...

08-10-2017, 02:21 AM	#1
Richy_T Member Posts: 18 Karma: 10 Join Date: Aug 2017 Device: kindles of all kinds	Is there any known issue with Kindle and not finding wifi access? Very weird thing happened today. I was attending a group meeting and I had prepared a modified version of a kindle weather station hack on a Kindle Touch to act as a display during the meeting. The app was running for three days at home with no issues. Not long before I left for the meeting, I realized that I wouldn't have access to my home wifi at the meeting over 40 miles away (d'oh) so I set the kindle up to access the hotspot on my phone and tested and everything was OK. So I arrive at the meeting and turn my hotspot on and... The kindle is not connecting. In fact, when I go into the wifi menu, it scans and detect there being no wifi access points despite my phone being one, the restaurant having one and there being several other access points detectable by my phone in the region. I rebooted a couple of times including a couple of full hold-down-the-power-buttin reboots but the same thing. Eventually I gave up (not a biggie, I was just trying to show off). So after the meeting, I drive the 40 miles home, check the kindle and there is the full list of local hotspots. Within minutes, I'm connected to my home one and the pseudo-weather app is updating again. So I'm wondering what happened. I am wondering if perhaps there was an overwhelming radio signal that blocked out all the hotspots on the Kindle. Seems unlikely as the phone was picking up plenty but a couple of people were having trouble with the restaurant free access and this was in a fairly busy downtown area. Other alternatives I can think of could be too many local hotspots causing trouble (seems I would have heard about that by now though) or something weird in an SSID causing issues. Or maybe my kindle was just going crazy for an hour. Before anyone suggests this should be in the developer thread because of the weather thing, I believe that is completely unrelated to the issue so I am posting it here. Edit: I dug into the logs and I have to work out how to interpret the timestamps but I see that there are a lot of errors that look like this probably around the time that this was occurring: Code: 150331:151730 wifid[7029]: W iw:scan:blen=8192:insufficient buffer 150331:151730 wifid[7029]: W iw:scan:blen=16384:insufficient buffer 150331:151730 wifid[7029]: W iw:scan:blen=32768:insufficient buffer I also see some of this error. Was my kindle simply too hot and it refused to turn wifi on? Code: 170809:152806 kernel: I papyrus:TempExceeded:temp=29: That seems a little low to be cutting off wifi but... Last edited by Richy_T; 08-10-2017 at 02:45 AM.