Red Hat Bugzilla – Bug 390841
nv_drv fails to choose correct panel size
Last modified: 2018-04-11 07:44:31 EDT
Description of problem:
On a pair of 1600x1200 DFP's on my video card, the nv_drv driver
messes up the panel size, and thence the dual-head/virtual size
(--) PCI:*(1:0:0) nVidia Corporation NV43 [GeForce 6600 GS] rev 162, Mem @
0xfa000000/24, 0xe0000000/28, 0xf9000000/24, BIOS @ 0xfbee0000/17
(II) NV(0): Supported additional Video Mode:
(II) NV(0): clock: 162.0 MHz Image Size: 432 x 324 mm
(II) NV(0): h_active: 1600 h_sync: 1664 h_sync_end 1856 h_blank_end 2160
(II) NV(0): v_active: 1200 v_sync: 1201 v_sync_end 1204 v_blanking: 1250
(II) NV(0): Ranges: V min: 56 V max: 75 Hz, H min: 30 H max: 81 kHz, PixClock
max 170 MHz
(II) NV(0): Monitor name: SyncMaster
(II) NV(0): Serial No: HCHL201539
(II) NV(0): EDID (in hex):
(II) NV(0): 00ffffffffffff004c2dd00131325242
(II) NV(0): 06100103802b20782aee95a3544c9926
(II) NV(0): 0f5054bfef80a94081808140714f0101
(II) NV(0): 010101010101483f403062b0324040c0
(II) NV(0): 1300b0441100001e000000fd00384b1e
(II) NV(0): 5111000a202020202020000000fc0053
(II) NV(0): 796e634d61737465720a2020000000ff
(II) NV(0): 004843484c3230313533390a202000ff
(--) NV(0): CRTC 0 is currently programmed for DFP
(II) NV(0): Using DFP on CRTC 0
(--) NV(0): Panel size is 1280 x 1024
(II) NV(0): EDID vendor "SAM", prod id 464
(II) NV(0): Using EDID range info for horizontal sync
(II) NV(0): Using EDID range info for vertical refresh
(II) NV(0): Printing DDC gathered Modelines:
(II) NV(0): Modeline "1600x1200"x0.0 162.00 1600 1664 1856 2160 1200 1201
1204 1250 +hsync +vsync (75.0 kHz)
(II) NV(0): Not using mode "1600x1200" (no mode of this name)
(--) NV(0): Virtual size is 2560x1024 (pitch 2560)
Please note that the nvidia driver does the right thing.
Sadly, something about fedora 8 plus that driver makes the machine
prone to freezing, thus my attempt to use nv_drv. However, if it
can't drive the panel at the proper resolution, I'm stuck.
Thanks for the bug report. We have reviewed the information you have provided
above, and there is some additional information we require that will be helpful
in our diagnosis of this issue.
Please attach your X server config file (/etc/X11/xorg.conf) and X server log
file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file
attachments using the bugzilla file attachment link below.
Please, make sure, that no remains of nvidia driver are present on your hard
disk when running the test above (and below for that matter), see
http://fedoraproject.org/wiki/Xorg/3rdPartyVideoDrivers for instructions how to
Could you please also try to run without any /etc/X11/xorg.conf whatsoever and
let X11 autodetect your display and video card? Attach to this bug
/var/log/Xorg.0.log from this attempt as well, please.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
Created attachment 265871 [details]
Created attachment 265881 [details]
(Same symptoms if the "Monitor" clause is absent or if the "FlatPanel" option
is left at its default "on".)
Created attachment 265891 [details]
(same, after forcing removal of leftover sneaky nvidia glx module)
Created attachment 265901 [details]
(same, after removing bug-finding experiments)
Created attachment 265911 [details]
And this is the Xorg.0.log coming from no xorg.conf.
Yep, it sure does.
*** This bug has been marked as a duplicate of 234824 ***