GNOME Development Leftovers
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Nightly GNOME Apps and New Adwaita GTK Theme Run Through
In this video, we are quickly looking at Nightly GNOME Apps and a sneak peek at New Adwaita GTK Theme.
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Emmanuele Bassi: And I’m home
Of course I couldn’t stay home playing video games, recording podcasts, and building gunplas forever, and so I had to figure out where to go to work next, as I do enjoy being able to have a roof above my head, as well as buying food and stuff. By a crazy random happenstance, the GNOME Foundation announced that, thanks to a generous anonymous donation, it would start hiring staff, and that one of the open positions was for a GTK developer. I decided to apply, as, let’s be honest, it’s basically the dream job for me. I’ve been contributing to GNOME components for about 15 years, and to GTK for 12; and while I’ve been paid to contribute to some GNOME-related projects over the years, it was always as part of non-GNOME related work.
The hiring process was really thorough, but in the end I managed to land the most amazing job I could possibly hope for.
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Opera Launches Built-in Cryptocurrency Wallet for Android, ManagedKube Partners with Google Cloud to Provide a Monitoring App for Kubernetes Cluster Costs, QEMU 3.1 Released, IoT DevCon Call for Presentations and GNOME 3.31.3 Is Out
GNOME 3.31.3 is out, and this will be the last snapshot of 2018. Note that this is development code meant for testing and hacking purposes. For a list of changes, go here, and the source packages are here.
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Firmware Attestation
When fwupd writes firmware to devices, it often writes it, then does a verify pass. This is to read back the firmware to check that it was written correctly. For some devices we can do one better, and read the firmware hash and compare it against a previously cached value, or match it against the version published by the LVFS. This means we can detect some unintentional corruption or malicious firmware running on devices, on the assumption that the bad firmware isn’t just faking the requested checksum. Still, better than nothing.
Any processor better than the most basic PIC or Arduino (e.g. even a tiny $5 ARM core) is capable of doing public/private key firmware signing. This would use standard crypto using X.509 keys or GPG to ensure the device only runs signed firmware. This protects against both accidental bitflips and also naughty behaviour, and is unofficial industry recommended practice for firmware updates. Older generations of the Logitech Unifying hardware were unsigned, and this made the MouseJack hack almost trivial to deploy on an unmodified dongle. Newer Unifying hardware requires a firmware image signed by Logitech, which makes deploying unofficial or modified firmware almost impossible.
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Robert Ancell: Interesting things about the GIF image format
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GIFs in GNOME
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About ncurses Colors
These colors go back to CGA, IBM's Color/Graphics Adapter from the earlier PC-compatible computers. This was a step up from the plain monochrome displays; as the name implies, monochrome could display only black or white. CGA could display a limited range of colors.
CGA supports mixing red (R), green (G) and blue ( colors. In its simplest form, RGB is either "on" or "off". In this case, you can mix the RGB colors in 2x2x2=8 ways. Table 1 shows the binary and decimal representations of RGB.
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