Language Selection

English French German Italian Portuguese Spanish

The current state of UEFI and Linux

Filed under
Linux

Executive summary: Most things work fine.

Things we know are broken:

* Some Samsung laptops. The samsung-laptop driver is a slightly weird thing. By 2010 (when it first appeared) most vendors had moved over to using some level of firmware abstraction, either using ACPI or WMI. Samsung still seemed to be stuck around a decade earlier - they were providing a region of memory at a known address, and you'd read that address to find a bunch of offsets. Then you'd write magic values based on those offsets to magic system IO ports based on those offsets and something would happen. Those writes were triggering System Management Mode, a special x86 CPU mode where the processor executes code from memory that the OS can't see, without telling the OS that it's doing so. There's nothing especially new in this (SMM first appeared in the 386sl back in 1990), but it also means that you depend on the system vendor not changing the interface without telling you. Turns out that Samsung apparently changed their platform interface when they moved to UEFI, but didn't actually do anything to prevent old drivers from breaking things -

rest here




More in Tux Machines

Announcing Season of KDE 2018

KDE Student Programs is pleased to announce the 2018 Season of KDE for those who want to participate in mentored projects that enhance KDE in some way. Every year since 2013, KDE Student Programs has been running Season of KDE as a program similar to, but not quite the same as Google Summer of Code, offering an opportunity to everyone (not just students) to participate in both code and non-code projects that benefits the KDE ecosystem. In the past few years, SoK participants have not only contributed new application features but have also developed the KDE Continuous Integration System, statistical reports for developers, a web framework, ported KDE Applications, created documentation and lots and lots of other work. For this year’s Season of KDE, we are shaking things up a bit and making a host of changes to the program. Read more

How To Get Started With The Ubuntu Linux Distro

The Linux operating system has evolved from a niche audience to widespread popularity since its creation in the mid 1990s, and with good reason. Once upon a time, that installation process was a challenge, even for those who had plenty of experience with such tasks. The modern day Linux, however, has come a very long way. To that end, the installation of most Linux distributions is about as easy as installing an application. If you can install Microsoft Office or Adobe Photoshop, you can install Linux. Here, we'll walk you through the process of installing Ubuntu Linux 17.04, which is widely considered one of the most user-friendly distributions. (A distribution is a variation of Linux, and there are hundreds and hundreds to choose from.) Read more

today's leftovers

'Turbo Boost Max 3.0' and Mesa 17.2.4

  • Turbo Boost Max 3.0 Support For Skylake Fixed With Linux 4.15
    The platform-drivers-x86 updates have been sent in for Linux 4.15 and include a range of improvements for Intel hardware support. One of the bigger items is support for Skylake CPUs with Turbo Boost Max 3.0.
  • Mesa 17.2.4 Graphics Stack Lands for Ubuntu 16.04 LTS and Ubuntu 17.10 Gamers
    Canonical's Timo Aaltonen reports on the availability of the Mesa 17.2.4 open-source graphics drivers stack on the X-SWAT updates PPA for Ubuntu 16.04 LTS and Ubuntu 17.10 systems. Ubuntu systems have always lagged behind the development of the Mesa 3D Graphics Library, the Linux graphics stack containing open-source drivers for Intel, AMD Radeon, and Nvidia GPUs, but they usually catch up with it through a specially crafted PPA (Personal Package Archive) repository that can be easily installed by users.