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|Release RSS Feed|
|I've cleaned up the Release RSS Feed to contain just the relevant changes and versioning info. Should be pretty readable now, without all that history. One day I hope to allow filtering of the results in the feed for people that don't want to know about all the releases I make.|
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|Intel GPU brokeness|
Date: 15/5/2018||I had noticed recently that the colour depth on one of my monitors had dropped to 6bit. I was getting ugly colour banding on gradients. The other monitor (same hardware: Dell U2515H) was fine. Was it Windows 10? Or the GPU? After much Googling I discovered it was being experienced by others as well, all using Intel GPUs:|
Intel HD630 New HDR driver problem on primary monitor
After finding that thread I came to a fix that works for me: Turn off DisplayPort v1.2 support in the monitor's setup menu. Full 8bit support is back. I don't need the daisy chaining functionality so that works for me. The machine in question has an Intel Iris 580 GPU. It's definitely a driver bug rather than a hardware bug. As earlier drivers seem to work ok on DP v1.2.
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|I've just finished a fairly major re-style of the forums just now. I hope you like it! Functionally it's still fairly much the same but it's much more modern looking. I tool a little inspiration from the Whirlpool Forums which have a nice design. But kinda blended in my own thing.|
I've also added new forums for the different apps that I recently launched. And removed some old cruft as well.
The old forums are still there but I'll removed them once the new version has been tested a little more.
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|So given this snippit:
add_dependencies(my_target jansson)I get this error:
The dependency target "jansson" of target "my_target" does not exist.Ok so I did 'add_directory' that, so what if I did this:
add_library(jansson) add_dependencies(my_target jansson)Now I get:
add_library cannot create imported target "jansson" because another target with the same name already exists.Really? It just errored out because it didn't exist? You can't have it both ways Cmake!!!
Cmake: you get what you paid for!
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|UDP and Ubuntu 14/Windows incompatibility|
Tags: linux ubuntu networking
|For the last few weeks I've been mucking around in the background with an application I've called "ClipShare" that basically sits on the network and allows you to copy and paste between different machines. It supports text, images and files at the moment. I'm sure such a thing already exists but I like how it auto-detects all the machines running it on the network via UDP broadcast and supports Windows, Mac and Linux. It's far from production ready, it still crashes a bit and hangs up during file transfers sometimes. But over time I'm sure I'll iron that out.|
Things like Samba, VNC and VM's (Vmware/Virtualbox) tend to have support for things like clipboard and file sharing. But in my experience they break very easily and it's 50/50 if they'll work or not. Hence having an alternative for getting the data across.
In testing I had a Ubuntu 14 VM running on a Windows host and for the life of me couldn't get the UDP packets to go from Ubuntu to Windows. I could see the packets arriving in Windows land via Wireshark but the recvfrom wouldn't get the packet. The packet wasn't large, just 40 bytes or so. In researching the issue I found that IP packets have a checksum, so I figured out how to get Wireshark to test the checksum. It confirmed the checksum was good. I could see using 'netstat -s' that there was an increasing count of 'Received Packets Discarded'. So Windows for reasons unknown was discarding the UDP traffic from Ubuntu. I tried turning off the Windows Firewall. No difference.
So then I decided to spin up my Ubuntu 16 VM and test the exact same code there. And sure enough it's working fine. So in conclusion I believe that at the OS level, Ubuntu 14 has some busted networking code. I can't tell what's wrong. Maybe it's a Windows thing. But it's basically meant I'm moving to Ubuntu 16 for all my Linux dev stuff. The main reason I had a Ubuntu 14 environment was that I had a working Raspberry Pi cross compiler install and I hate messing with a working env just for the sake of upgrading. However that broke recently anyway so it seems that the last reason for keeping 14 just disappeared.
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|Apple and the curse of VNC|
Tags: mac vnc
|For many years now it's annoyed me greatly that trying to connect a Windows VNC client to a MacOSX VNC server has resulted in terrible horrible slow and glitchy performance. Mac to Mac is fine, Windows to Windows is fine, but cross platform? Nope. In fact the Mac to Mac performance is better than any of the Windows or Linux implementations. The reason being that Apple has added a range of proprietary extensions to make that use case better than normal VNC. This is also why the Windows -> Mac case is sub-optimal. It seems that the fast VNC modes that everyone else talks aren't spoken by the Apple VNC server implementation. So what to do? Well the solution that I'm employing at the moment is to... not use the Apple VNC server implementation! Turn off screen sharing in the options and install
VNC connect. The cross platform performance is quite decent, running the server and client from the same vendor. Maybe 90% as fast as the all Apple case?|
Embrace, extend, extinguish am I right?
You either die a hero or you live long enough to see yourself become the villain.
(I will try and find a free solution in the medium term, and will update this post if/when I do)
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