Category Archives: X Lists

One Fedora 17 Box up to 16 USB Multiseat Terminals

Fedora 17, as shipped, supports only 7 or 8 plug-and-play USB terminals per machine. The cause is the kernel evdev driver’s limit of 32 input devices. You can see how your 32 evdev slots are currently getting used on a system with the command for i in {0..31..1}; do udevadm info -a -n /dev/input/event$i | […]

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Dconf configuration: GNOME 3 Fallback Mode

The Linux GNOME 3 UI assumes you have a beefy 3D GPU and capable driver, which can cause problems when that isn’t the case. Individual GNOME 3 users can fix this by setting their desktop experience to GNOME 3 “fallback mode” which can avoid the 3D compute burden. Fallback mode is an essential setting for […]

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New Distros and Linux Automatic USB Multiseat Support

OpenSUSE and ArchLinux appear to be making good progress on integrating the latest version of systemd, which is a central element of Linux’s new Automatic USB multiseat support — letting you turn one machine into many with plug and play USB terminals. Since this is all open source, we expect the porting process will happen […]

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DisplayLink USB Devices on Linux Kernel 3.4.0

Linux kernel 3.4.0 is the first to include a new driver for DisplayLink-based USB 2.0 devices, called “udl”. udl is a port of the udlfb driver to Linux’s DRM architecture. David Airlie is doing this work, and the potential is very exciting. Eventually, this architecture will lead to a host of advantages, including GPU-accelerated 3D […]

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Fedora 17’s Secret Turbo Boost Button

Fedora 17’s out-of-the-box plug and play USB multiseat is awesome for sharing one system with many users — but there’s a way to dramatically boost performance and scalability, by changing the Fedora defaults. Background Fedora 17 continues to default to GNOME 3, which assumes the presence of powerful 3D hardware. If that’s not the case […]

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Howto: DisplayLink USB Single Monitor on Linux

Unfortunately, Linux doesn’t support multiple graphics adapters the way Windows does, which means you can’t just plug in USB graphics adapters and expect them to extend your desktop (the good news is there is progress on this support). What is possible, however, is running a single DisplayLink adapter, or several with a Xinerama or multiseat […]

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Plugable’s New 10-Port USB 2.0 Hub

A lot of USB hubs end up looking like a porcupine on your desk – wires going in all directions. So we’re excited to launch a hub with a lots of expandability (10 ports), but with a simple and clean design. Full USB 2.0/1.1 performance and compatibility. No compromises. Works on all platforms with no […]

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Howto: ASIX 88178 USB Ethernet Adapter on Ubuntu 10.10 Linux

[update Dec 2011: Linux kernel 3.2 rc3 and later “just work” (with config USB_NET_AX8817X), so the following steps are not needed.] Support for these devices has been in the Linux kernel since kernel 2.6.21 (file /drivers/net/usb/asix.c). However, prior to version 3.2, this driver fails to find an IP address, and comes up “disconnected” To get […]

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Plugable Open Source Hardware Samples Program

From time to time Plugable has extra test hardware around our labs. Rather than have it gather dust, we’d like to send it out to the open source community to help foster driver development. We know how much work open source driver development is — getting hardware should be the easiest part of it. So […]

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DisplayLink Linux kernel driver (udlfb) updates slated for 2.6.37

The latest set of patches for udlfb, the Linux kernel framebuffer driver for DisplayLink chips, has been submitted and looks on track for kernel 2.6.37. This will catch the kernel up to everything on http://git.plugable.com/ Linux is a big and constantly shifting platform. With our USB graphics products (and generally for DisplayLink based products, since […]

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