kohinoor blogja

Linux desktop eve :) Linux is the only OS to support diagonal PC monitor mode - dev champions the case for 22-degree-rotation computing

( kohinoor | 2023. 12. 30., szo – 06:40 )

Ugy latszik, mindig kitalalnak valami ujat, kivancsi vagyok arra, hogy a gyartok fogjak-e tamogatni vagy Apple modon "meginnovalni" :>

https://twitter.com/d_feldman/status/1740108692203430006

https://www.tomshardware.com/monitors/linux-is-the-only-os-to-support-d…

Windows 11 Enterprise virtual machine trial

( kohinoor | 2021. 11. 23., k – 21:23 )

https://developer.microsoft.com/en-us/windows/downloads/virtual-machine…

 

"We currently package our virtual machines for four different virtualization software options: VMWare, Hyper-V, VirtualBox, and Parallels."

 

This evaluation virtual machine includes:

Window 11 Enterprise (evaluation)

Windows 10 SDK, version 2004 (10.0.19041.0)

Visual Studio 2019 (latest as of 10/09/21) with the UWP, .NET desktop, and Azure workflows enabled and also includes the Windows Template Studio extension

Visual Studio Code (latest as of 10/09/21)

Windows Subsystem for Linux enabled with Ubuntu installed

Developer mode enabled

Windows Terminal installed

Hackers can use the graphics processing unit to spy on web activity, steal passwords, and break into cloud-based applications

( kohinoor | 2018. 11. 07., sze – 21:00 )

https://news.ucr.edu/articles/2018/11/05/new-attacks-graphics-processor…

"All three attacks require the victim to first acquire a malicious program embedded in a downloaded app. The program is designed to spy on the victim’s computer."

"The first attack tracks user activity on the web. When the victim opens the malicious app, it uses OpenGL to create a spy to infer the behavior of the browser as it uses the GPU. Every website has a unique trace in terms of GPU memory utilization due to the different number of objects and different sizes of objects being rendered. This signal is consistent across loading the same website several times and is unaffected by caching."

Intel CPUs impacted by new PortSmash side-channel vulnerability

( kohinoor | 2018. 11. 03., szo – 08:06 )

https://www.zdnet.com/article/intel-cpus-impacted-by-new-portsmash-side…

"Researchers say PortSmash impacts all CPUs that use a Simultaneous Multithreading (SMT) architecture, a technology that allows multiple computing threads to be executed simultaneously on a CPU core."

"AMD CPUs likely impacted"

PoC: https://github.com/bbbrumley/portsmash

NVIDIA graphics firmware update tool for DisplayPort 1.3 and 1.4 displays

( kohinoor | 2018. 06. 07., cs – 07:52 )

https://www.nvidia.com/object/nv-uefi-update-x64.html

"To enable the latest DisplayPort 1.3 / 1.4 features, your graphics card may require a firmware update.

Without the update, systems that are connected to a DisplayPort 1.3 / 1.4 monitor could experience blank screens on boot until the OS loads, or could experience a hang on boot.

The NVIDIA Firmware Updater will detect whether the firmware update is needed, and if needed, will give the user the option to update it."

Linuxos verzio ugy tunik nincsen :(

Firmware Updates and Initial Performance Data for Data Center Systems

( kohinoor | 2018. 01. 18., cs – 13:53 )

https://newsroom.intel.com/news/firmware-updates-and-initial-performanc…

"We have now issued firmware updates for 90 percent of Intel CPUs introduced in the past five years, but we have more work to do. As I noted in my blog post last week, while the firmware updates are effective at mitigating exposure to the security issues, customers have reported more frequent reboots on firmware updated systems.

As part of this, we have determined that similar behavior occurs on other products in some configurations, including Ivy Bridge-, Sandy Bridge-, Skylake-, and Kaby Lake-based platforms. We have reproduced these issues internally and are making progress toward identifying the root cause. In parallel, we will be providing beta microcode to vendors for validation by next week."

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