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nVidia Fixes Linux Bug
Nvidia has fixed an ancient problem in Ubuntu systems which turned the screen into 40 shades of black.
The problem has been around for years and is common for anyone using Nvidia gear on Ubuntu systems.
When opening the window of a new application, the screen would go black or become transparent. As it turns out, this is actually an old problem and there are bug reports dating back from Ubuntu 12.10 times.
However to be fair it was not Nvidia’s fault. The problem was caused by Compiz, which had some leftover code from a port. Nvidia found it and proposed a fix.
“Our interpretation of the specification is that creating two GLX pixmaps pointing at the same drawable is not allowed, because it can lead to poorly defined behavior if the properties of both GLX drawables don’t match. Our driver prevents this, but Compiz appears to try to do this,” wrote NVIDIA’s Arthur Huillet.
Soon after that, a patch has been issued for Compiz and it’s been approved. The patch would be pushed in Ubuntu 15.04 and is likely to be backported to Ubuntu 14.04 LTS.
RHEL Finally Available On IBM’s Power8
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IBM has made the Power8 version of the latest Red Hat Enterprise Linux (RHEL) beta available through its Power Development Platform (PDP) as the firm continues to build support for its Power systems.
IBM and Red Hat announced in December that RHEL 7.1 was adding support for the Power8 processor in little endian instruction format, as the beta release was made available for testers to download.
This version is available for developers and testers to download from today through the IBM PDP and at IBM Innovation Centres and Client Centres worldwide, IBM announced on its Smarter Computing blog.
“IBM and Red Hat’s collaboration to produce open source innovation demonstrates our commitment to developing solutions that efficiently solve IT challenges while empowering our clients to make their data centres as simple as possible so they can focus on core business functions and future opportunities,” said Doug Balog, general manager for Power Systems at IBM’s Systems & Technology Group.
The little endian support is significant because IBM’s Power architecture processors are capable of supporting little endian and big endian instruction formats. These simply reflect the order in which bytes are stored in memory.
The Power platform has long had Linux distributions and applications that operate in big endian mode, but the much larger Linux ecosystem for x86 systems uses little endian mode, and supporting this in Red Hat makes it much easier to port applications from x86 to Power.
Suse Linux Enterprise Server 12 launched last year with little endian support for the Power8 processor, as did Canonical’s Ubuntu 14.04 LTS.
However, Red Hat and Suse are understood to be continuing to support their existing big endian releases on Power for their full product lifecycles.
IBM sold off its x86 server business to Lenovo last year, and has focused instead on the higher value Power Systems and z Systems mainframes.
In particular, the firm has touted the Power Systems as more suitable for mission critical workloads in scale-out environments like the cloud than x86 servers, and has been forging partnerships with firms such as Red Hat through its OpenPower Foundation.