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by audetto
Thu May 14, 2020 3:55 pm
Forum: Troubleshooting
Topic: Pi 3, OpenGL, WiFi 5GHz and Monitor interferences
Replies: 0
Views: 84

Pi 3, OpenGL, WiFi 5GHz and Monitor interferences

Been running a Pi3B+ access point on 5GHz (seems more stable that 2.4GHz) and noticed twice this odd behaviour. I switched to Fake KMS (as it properly swtches off the screen after a few minutes) and after it blacks the screen, when I move mouse and keyboard to bring it on, it has done it, but random...
by audetto
Sat May 09, 2020 6:30 pm
Forum: Troubleshooting
Topic: OpenVPN performance on Raspberry PI 4
Replies: 3
Views: 577

Re: OpenVPN performance on Raspberry PI 4

I would also like to know why ExpressVPN is so slow on my raspberry pi 3B+. I am using it as a WIFI-hotspot, and it normally gives me around 90mbps dowload speed, but around 7-10mbps with expressvpn connected. Before blaming the VPN provider or the Pi, what do you get on a Desktop PC? I get 112 - 9...
by audetto
Sat May 09, 2020 11:16 am
Forum: Troubleshooting
Topic: OpenVPN performance on Raspberry PI 4
Replies: 3
Views: 577

Re: OpenVPN performance on Raspberry PI 4

I would also like to know why ExpressVPN is so slow on my raspberry pi 3B+. I am using it as a WIFI-hotspot, and it normally gives me around 90mbps dowload speed, but around 7-10mbps with expressvpn connected. I have set up a wifi router using expressvpn and the download I get from a tablet is abou...
by audetto
Tue May 05, 2020 12:10 pm
Forum: Troubleshooting
Topic: Pi 3B+ Access Point: a bit temperamental
Replies: 2
Views: 160

Re: Pi 3B+ Access Point: a bit temperamental

Continuing with my journey, I feel (without strong evidence) that on the 5Ghz band the Pi works better as AP. I have used the same hostap.conf file that OpenWRT uses by default on the Pi Things are not perfect, but looks more stable. Been trying to figure out how to select the best 5Ghz channel and ...
by audetto
Sun May 03, 2020 7:49 am
Forum: Advanced users
Topic: DNS Resolution on Raspbian
Replies: 3
Views: 321

Re: DNS Resolution on Raspbian

I made some progress (and changed vpn provider for other reasons). Everything works but I have no idea why. Reading some tutorials https://wiki.archlinux.org/index.php/OpenVPN#DNS it seems that one has to do a few steps to get DNS from the OpenVPN server. I just run openvpn (the client) and everythi...
by audetto
Sat May 02, 2020 3:22 pm
Forum: Troubleshooting
Topic: Pi 3B+ Access Point: a bit temperamental
Replies: 2
Views: 160

Re: Pi 3B+ Access Point: a bit temperamental

Answering my own email. I vote for some sort of sleep / low power mode. The chromecast has a stable ping time of < 2ms. The samsung galaxy anywhere up to 1500ms and sometimes it just does not answer. Then I do something on the tablet and it starts to reply at very variable times (1-1500). It is just...
by audetto
Fri May 01, 2020 8:45 pm
Forum: Troubleshooting
Topic: Pi 3B+ Access Point: a bit temperamental
Replies: 2
Views: 160

Pi 3B+ Access Point: a bit temperamental

I have setup a Pi 3+ as an access point following this https://www.raspberrypi.org/documentation/configuration/wireless/access-point-routed.md It works pretty well... until it doesn't. I am not talking about the whole routing bit, but simply the link between the pi and the wifi clients. Some clients...
by audetto
Fri May 01, 2020 10:30 am
Forum: Advanced users
Topic: DNS Resolution on Raspbian
Replies: 3
Views: 321

Re: DNS Resolution on Raspbian

I do.
I had left dnsmasq on for wlan0 which I thought would not cause issues.
But interaction between dnsmasqd and resolved is a common topic of questions.

Thank you, need to do more homework.
by audetto
Fri May 01, 2020 9:40 am
Forum: Advanced users
Topic: DNS Resolution on Raspbian
Replies: 3
Views: 321

DNS Resolution on Raspbian

I am trying to setup a pi3 B+ as a router and cannot really understand how DNS resolution works in raspbian. Before doing any router business, I am just trying to understand how dns resolution work on a pi. /etc/resolv.conf contains # Generated by resolvconf nameserver 127.0.0.1 But when I try to us...
by audetto
Sat Apr 11, 2020 6:17 am
Forum: Troubleshooting
Topic: Pi3b+ Hangs, Chromium's fault?
Replies: 5
Views: 235

Re: Pi3b+ Hangs, Chromium's fault?

Heavy usage of SD Card or low RAM seem to be the causes: is there some way to limit the amount of damages Chromium can do? Use any other browser. Chromium is a resource hog, always has been. I agree. Years ago the Pi used to ship with a different browser, maybe they should have not moved to chromium.
by audetto
Fri Apr 10, 2020 7:20 pm
Forum: Troubleshooting
Topic: Pi3b+ Hangs, Chromium's fault?
Replies: 5
Views: 235

Pi3b+ Hangs, Chromium's fault?

Hi been using a Pi3B+ a bit more now due to the lockdown and I have been experiencing a lot of crashes. It seems to always be caused by Chromium which ended up in the wrong page and could never recover. Not that I open tons of tabs, 1 is enough if it is the right one. Left it there for 10 minutes an...
by audetto
Mon Apr 06, 2020 7:16 pm
Forum: Arch
Topic: GPU memory problem
Replies: 19
Views: 20865

Re: GPU memory problem

Will we have this integrated is raspi-config or even better fixed in a future kernel version?
by audetto
Thu Apr 02, 2020 7:53 pm
Forum: Arch
Topic: GPU memory problem
Replies: 19
Views: 20865

Re: GPU memory problem

puzzle-star wrote:
Mon Feb 17, 2020 6:56 pm

The solution, above, is forcing the drm device to be always "on", disabling automatic "runtime suspend" before it freezes (so at boot).

Pedro
What are the side effects of this disabling runtime suspend? Temperature, CPU?
by audetto
Sun Mar 22, 2020 6:25 pm
Forum: Troubleshooting
Topic: Pi cannot establis first daily https connection
Replies: 1
Views: 111

Pi cannot establis first daily https connection

Running my pi with arch. This strange behaviour is reliably observed: the first https connection of the day fails. Then it works. This is true for a python script running on a timer or pacman updating the database. error: failed retrieving file 'core.db' from mirror.archlinuxarm.org : Could not reso...
by audetto
Sun Dec 15, 2019 9:39 pm
Forum: Graphics programming
Topic: Fast(er) image rendering to screen on a Pi3
Replies: 9
Views: 1852

Re: Fast(er) image rendering to screen on a Pi3

For reference if anyone is reading, I've tried another version

https://github.com/audetto/TwinklebearD ... in.cpp#L68

using SDL_BlitSurface + SDL_UpdateWindowSurface but it generates massive rendering artefacts.
On the other hand, it looks like it is faster.
by audetto
Sun Dec 15, 2019 8:59 pm
Forum: Graphics programming
Topic: Fast(er) image rendering to screen on a Pi3
Replies: 9
Views: 1852

Re: Fast(er) image rendering to screen on a Pi3

For reference the code is here https://github.com/audetto/TwinklebearDev-Lessons/blob/master/Lesson1/src/main.cpp#L59 Different display driver has a big impact as the Full KMS goes 60FPS at 40-50% of the CPU. It still feels a lot for doing nothing, but I think the issue is with the desktop integrati...
by audetto
Sun Dec 15, 2019 7:35 pm
Forum: Graphics programming
Topic: Fast(er) image rendering to screen on a Pi3
Replies: 9
Views: 1852

Fast(er) image rendering to screen on a Pi3

I am working on a computer emulator and I have the need to display a bitmap to the screen fast (60FPS?) I have tried using Qt and I get about 30 FPS at the cost of massive CPU usage. Tried with SDL2 (640x480 32 bit) with a code which looks like do { SDL_Surface * bmp = (counter & 1) ? bmp1 : bmp2; S...
by audetto
Mon Oct 14, 2019 7:25 am
Forum: Gaming
Topic: Still using Minecraft?
Replies: 2
Views: 1395

Re: Still using Minecraft?

This is definitely true and Minecraft resonates a lot more than Minetest or some other "piworld". In the same way that people on a pi are encouraged to use LibreOffice (hoe many users does MSOffice have?) some effort towards fully open 3d worlds would be welcome. Having said that, I struggled to fin...
by audetto
Sun Oct 13, 2019 3:52 pm
Forum: Gaming
Topic: Still using Minecraft?
Replies: 2
Views: 1395

Still using Minecraft?

I still see a lot of articles and examples about python scripts for Minecraft Pi. Why do I say "still"? Minecraft Pi is a dead project, never to be updated again. Only runs on the Pi. Its integration in the destkop is less that optimal with odd mouse behaviour. There are pretty good FOSS alternative...
by audetto
Thu Oct 10, 2019 6:22 pm
Forum: Advanced users
Topic: Raspberry Pi 4 VPN Hotspot possible
Replies: 4
Views: 1848

Re: Raspberry Pi 4 VPN Hotspot possible

If you are happy to use a proxy and to configure each browser you dont need an access point, just a pi connected to your local network (ethernet or wifi). The advantage of the VPT + Access Point is that no extra configuration is required. Any device connected to the pi AP will go via the vpn regardl...
by audetto
Wed Oct 09, 2019 9:06 pm
Forum: Advanced users
Topic: Raspberry Pi 4 VPN Hotspot possible
Replies: 4
Views: 1848

Re: Raspberry Pi 4 VPN Hotspot possible

I want to do exactly the same. So, after reading I think 1) set up the openvpn client 2) this should create a new (virtual) interface 3) follow https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md 4) change eth0 in sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE...
by audetto
Thu Jul 11, 2019 9:26 pm
Forum: General discussion
Topic: Citrix Workspace on Pi 3
Replies: 4
Views: 1634

Re: Citrix Workspace on Pi 3

Previous version. With buster I have the same issue as you
by audetto
Tue Jul 09, 2019 5:37 am
Forum: General discussion
Topic: Citrix Workspace on Pi 3
Replies: 4
Views: 1634

[SOLVED] Re: Citrix Workspace on Pi 3

I managed to connect with both a PI2 and PI3 with super good performance. The error was yet again a certificate issue. The problem is that some errors area clearly linked to certificates, others (like unknown error) are more difficult to relate to it. In the end I have added all certificates from /e...
by audetto
Sun Jul 07, 2019 3:06 pm
Forum: General discussion
Topic: Citrix Workspace on Pi 3
Replies: 4
Views: 1634

Citrix Workspace on Pi 3

I've recently tried to run Citrix Workspace on the Pi with poor results. 1) The chromium app: works on Pi 2 and Pi 3, but it is too slow. Impossible to use on Pi 2, but still too slow on a Pi 3 b+. Connection always happens correctly. 2) Installed Citrix Receiver (wfica) on Pi 2 and 3 in Raspbian 9....
by audetto
Tue Oct 24, 2017 5:20 pm
Forum: Other programming languages
Topic: FUZE on amd64
Replies: 5
Views: 2010

Re: FUZE on amd64

Yes. Thank you

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