Can't Increase Toshiba Laptop Resolution to 1366x768

Mr.tux · 04-17-2011, 06:40 PM

I just bought a new Toshiba laptop, model number L650-ST3N01X, and I can't increase the resolution to 1366x768. I'm running Ubuntu 10.04. 1366x768 isn't a option in the GUI interface, the highest is 1024x768, but the product description said the laptop is capable of reaching it. I tried following these instructions, but they didn't work. I get this error message:

Code:

jared@jared-laptop:~$ cvt 1366 768
# 1368x768 59.88 Hz (CVT) hsync: 47.79 kHz; pclk: 85.25 MHz
Modeline "1368x768_60.00"   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync
jared@jared-laptop:~$ xrandr --newmode "1368x768_60.00"   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync
jared@jared-laptop:~$ xrandr --addmode VGA1 1368x768_60.00
xrandr: cannot find output "VGA1"
jared@jared-laptop:~$ xrandr --addmode default 1368x768_60.00
jared@jared-laptop:~$ xrandr --output default --mode 1368x768_60.00
xrandr: screen cannot be larger than 1024x768 (desired size 1368x768)
jared@jared-laptop:~$

macemoneta · 04-18-2011, 01:28 PM

Sandybridge Intel graphics aren't supported in Ubuntu 10.04. I believe that 11.04 is the earliest support, prebuilt:

Quote:

As I've been saying, Ubuntu 10.10 will not work fully with the Sandy Bridge CPU's graphics as its stack is too old. Intel has been working on Sandy Bridge open-source Linux support going back a year now, and some of the DRM and DDX bits have been living in mainline trees for months, but it's not the polished and proper support. For the proper Sandy Bridge experience you are left looking for the Linux 2.6.37 kernel, Mesa 7.10, the latest libdrm, and the xf86-video-intel 2.14.0 DDX that should be released in the next week or so. If you are trying to use MPEG2 / H.264 VA-API video acceleration, you will also need to be pulling libva (the VA-API library) from Git as the Sandy Bridge support upbringing is in no official release either.

With Ubuntu 10.10 you may get kernel mode-setting so your display will at least light up and you can use your desktop, but no Compiz, no 3D acceleration, no VA-API. To get all of this you will need to pull those five mentioned components (Linux kernel, Mesa, libdrm, xf86-video-intel, and libva [optionally for video acceleration]) from source or their tar-balls once they are officially released. These will not appear in Ubuntu 10.10 updates repository or anywhere else until Ubuntu 11.04 is released. If you're lucky there will be a PPA / third-party repository with some of these bits, but nothing official.