776999 in linux (Ubuntu): “[Lenovo W520] laptop freezes on ACPI-related actions” Binary package hint: gnome-power-manager I got the latest Ubuntu installed on a Lenovo W520 with graphics set to Nvidia discrete card.
![776999 in linux (Ubuntu): “[Lenovo W520] laptop freezes on ACPI-related actions”](http://cdn.pearltrees.com/s/pic/th/776999-freezes-related-package-21879375)
The laptop freezes, however, on power-management actions, such as brightness change and sleep/wake-up. A particularly annoying problem is that the machine freezes automatically after a GUI login if I had started gnome-power-manager previously. I have to remove the gnome-power-manager settings directory in order to get back in. If I boot with acpi=off parameter to the kernel things work fine, but then again no ACPI functionality is available. w520_datasheet.
Category:W520. Hardware W520-4284-49G Resources Reviews Linux Installation Power Adapter The W520 comes with a special 170W AC adapter (P/N 0A36227) that is currently not shipped with any other Thinkpad.
The 170W adapter plug has two extra notches that makes it physically impossible to use the 170W adapter with older equipment such as the W510 and some docking stations, although older chargers are physically forward compatible (while they may not provide enough power) with ports that support the 170W adapter. Most newer (20V) Thinkpad AC adapters have a compatible plug with the W520, but not all of them will work due to power constraints.
The 135W adapter is sufficient to run the W520 without throttling. Subcategories This category has only the following subcategory. Pages in category "W520" The following 42 pages are in this category, out of 42 total. How to enable integrated fingerprint reader with BioAPI. Basic installation Installing the bioapi framework Automated installation script The Script for enabling the fingerprint reader with BioAPI automates the installation of most components (bioapi framework, driver, pam_bioapi, pam setup, device permissions, pamtester and enrolling), for some Linux distributions.
Binary packages Note that these packages only take care of this one section. Debian/ Ubuntu Dapper If you're using Debian Sid (the unstable branch) or Ubuntu Dapper Drake 6.06 LTS you can try the packages from Michael R. Hint: Ignore the warning about not finding /usr/lib/libqtpwbsp.so, it's not fatal. Gentoo Gentoo now includes needed ebuilds.
ACCEPT_KEYWORDS=~x86 emerge pam_bioapi You can also grab the ebuild, or use the source-install procedure below. Also see for alternative documentation on installing on Gentoo including ebuilds for all the packages used. Fedora Core RPM packages for Fedora Core and installation instructions are available here Installing from source $ wget to $ . $ make. Huey PRO Colorimeter. Select ThinkPads feature a Pantone Huey PRO Colorimeter by X-Rite in the palm rest.
This is used for calibrating the colours of the LCD display. The way calibration works is that you close the LID and the display remains on with a special test screen, and the sensor in the palm rest does its thing. If you do not have a colour meter, Lenovo provides pre-calibrated profiles for most ThinkPads. Please see Colour profile. Linux support This sensor works with argyllcms and dispcalGUI under openSUSE 11.3. ThinkPads featuring this Technology W510, W520, W530, W700, W700ds, W701, W701ds. DispcalGUI—Open Source Display Calibration and Characterization powered by Argyll CMS.