Red Hat Bugzilla – Bug 840271
wrong dimension and dpi
Last modified: 2013-02-26 10:17:34 EST
Description of problem: The xorg server with the nouveau driver don't report correctly the display size and the calculated DPI Version-Release number of selected component (if applicable): xorg-x11-server-Xorg-1.11.4-3.fc16.i686 xorg-x11-drv-nouveau-0.0.16-27.20110720gitb806e3f.fc16.i686 How reproducible: always Steps to Reproduce: 1. use a system with a display with a DPI other as 96 dpi 2. 3. Actual results: Within Xorg.0.log you will see that the monitor width and height in cm is recognized and that a dpi is calculated: ----------------------- [ 12694.936] (--) NOUVEAU(0): Chipset: "NVIDIA NV49" ... [ 12695.025] (II) NOUVEAU(0): Max Image Size [cm]: horiz.: 37 vert.: 23 ... [ 12695.025] (II) NOUVEAU(0): clock: 161.6 MHz Image Size: 367 x 230 mm ... [ 12695.027] (**) NOUVEAU(0): Display dimensions: (370, 230) mm [ 12695.027] (**) NOUVEAU(0): DPI set to (131, 132) ------------------------ Expected results: xrandr report correct values but xdpyinfo which call XDisplayWidthMM() and XDisplayHeightMM() report values based on 96 dpi. If the xorg.conf file contain the option "DisplaySize 372 231" the values reported by xdpyinfo are correct. Additional info:
Reassigning from me, since I'm not the component owner for this.
I also have the same problem with the Dell Precision M4600 laptop and Nvidia Quadro card. xdpyinfo gives the wrong screen dimensions and dpi while xrandr gets it right.
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