Where are my default resolutions stored? They aren't in xorg.conf

David_g17 · 08-18-2010, 08:50 AM

I have two identical machines. I updated one (yum update), and now I can't view the display when it boots up; however, I can ssh into it. I'm pretty sure it's a resolution display issue on a KVM connected to the machines.

Years ago, I could view and change the default resolution in /etc/X11/xorg.conf. Now, it appears that information has been moved to another location.

My xorg.conf on the working and non-working machines is the same:

Code:

# Xorg configuration created by pyxf86config

Section "ServerLayout"
        Identifier     "Default Layout"
        Screen      0  "Screen0" 0 0
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "us"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "ati"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
EndSection

Nothing is mentioned about a resolution setting. Everything I google says to modify this file. Does anyone know where the default resolution settings are stored these days?

DrLove73 · 08-18-2010, 09:31 AM

If you use Fedora 13 (you haven given us that info) then you do not really need xorg.conf.

Please provide all the info about both of your machine, version, kernel version, model of the graphics card, installed drivers, etc...

David_g17 · 08-18-2010, 10:13 AM

in this particular situation, I'm running CentOS 5.4; however, I have come into the same problem at home running Fedora 12, and on another system running Fedora 13. Hence my lack of specifics.

Code:

$ uname -a
Linux web.dpi-inc.com 2.6.18-164.9.1.el5PAE #1 SMP Tue Dec 15 21:41:47 EST 2009 i686 i686 i386 GNU/Linux

Running on Dell PowerEdge 2650

Code:

$ lsmod
Module                  Size  Used by
vfat                   15937  0
fat                    51165  1 vfat
usb_storage            77985  0
autofs4                29253  3
hidp                   23105  2
nls_utf8                6209  3
cifs                  228065  5
rfcomm                 42457  0
l2cap                  29505  10 hidp,rfcomm
bluetooth              53925  5 hidp,rfcomm,l2cap
lockd                  63081  0
sunrpc                145533  2 lockd
ip_conntrack_ftp       11569  0
ip_conntrack_netbios_ns     6977  0
ipt_REJECT              9665  1
xt_state                6209  9
ip_conntrack           53281  3 ip_conntrack_ftp,ip_conntrack_netbios_ns,xt_state
nfnetlink              10713  1 ip_conntrack
iptable_filter          7105  1
ip_tables              17029  1 iptable_filter
ip6t_REJECT             9409  1
xt_tcpudp               7105  24
ip6table_filter         6849  1
ip6_tables             18053  1 ip6table_filter
x_tables               17349  6 ipt_REJECT,xt_state,ip_tables,ip6t_REJECT,xt_tcpudp,ip6_tables
dm_multipath           24909  0
scsi_dh                11713  1 dm_multipath
video                  21193  0
hwmon                   7365  0
backlight              10049  1 video
sbs                    18533  0
i2c_ec                  9025  1 sbs
button                 10705  0
battery                13637  0
asus_acpi              19289  0
ac                      9157  0
ipv6                  267489  41 ip6t_REJECT
xfrm_nalgo             13381  1 ipv6
crypto_api             12609  1 xfrm_nalgo
parport_pc             29157  0
lp                     15849  0
parport                37513  2 parport_pc,lp
scb2_flash              8525  0
mtdcore                 9989  1 scb2_flash
chipreg                 7361  1 scb2_flash
sg                     36573  0
floppy                 57125  0
pcspkr                  7105  0
tg3                   114757  0
serio_raw              10693  0
i2c_piix4              13133  0
i2c_core               23745  2 i2c_ec,i2c_piix4
ide_cd                 40161  0
cdrom                  36577  1 ide_cd
dm_raid45              67145  0
dm_message              6977  1 dm_raid45
dm_region_hash         15681  1 dm_raid45
dm_mem_cache            9537  1 dm_raid45
dm_snapshot            22885  0
dm_zero                 6209  0
dm_mirror              24265  0
dm_log                 14657  3 dm_raid45,dm_region_hash,dm_mirror
dm_mod                 63225  11 dm_multipath,dm_raid45,dm_snapshot,dm_zero,dm_mirror,dm_log
aacraid                68041  2
sd_mod                 25281  3
scsi_mod              141717  5 usb_storage,scsi_dh,sg,aacraid,sd_mod
ext3                  125001  2
jbd                    57065  1 ext3
uhci_hcd               25549  0
ohci_hcd               24809  0
ehci_hcd               34125  0

Code:

$ modinfo video
filename:       /lib/modules/2.6.18-164.9.1.el5PAE/kernel/drivers/acpi/video.ko
license:        GPL
description:    ACPI Video Driver
author:         Bruno Ducrot
srcversion:     10F5EBF049C559FE92947CC
depends:        backlight
vermagic:       2.6.18-164.9.1.el5PAE SMP mod_unload 686 REGPARM 4KSTACKS gcc-4.1
module_sig:     883f3504b284fdb828f9deacffa4dce112ca3709e22c46db296b6fdbdb8d45c637e8bfc27368ea8409d19ed5f81fff8a1e9db514d8754e758e69963dd

Code:

$ lspci
00:00.0 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset) (rev 33)
00:00.1 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset)
00:00.2 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset)
00:04.0 Class ff00: Dell Embedded Remote Access or ERA/O
00:04.1 Class ff00: Dell Remote Access Card III
00:04.2 Class ff00: Dell Embedded Remote Access: BMC/SMIC device
00:0e.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
00:0f.0 Host bridge: Broadcom CSB5 South Bridge (rev 93)
00:0f.1 IDE interface: Broadcom CSB5 IDE Controller (rev 93)
00:0f.2 USB Controller: Broadcom OSB4/CSB5 OHCI USB Controller (rev 05)
00:0f.3 ISA bridge: Broadcom CSB5 LPC bridge
00:10.0 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:10.2 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:11.0 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:11.2 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
03:06.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5703X Gigabit Ethernet (rev 02)
03:08.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5703X Gigabit Ethernet (rev 02)
04:08.0 PCI bridge: Intel Corporation 80303 I/O Processor PCI-to-PCI Bridge (rev 01)
04:08.1 RAID bus controller: Dell PowerEdge Expandable RAID Controller 3/Di (rev 01)

David_g17 · 08-18-2010, 10:52 AM

apparently Xorg doesn't really use xorg.conf anymore ( http://www.linuxquestions.org/questi...issing-690904/ ). It "auto-detects" settings now.

DrLove73 · 08-18-2010, 11:52 AM

But CentOS stayed the same and needs it. In CentOS, I found I need to increase Max resolution of Monitor (change monitor type by one size higher) and then all resolutions I can use are there.

RockDoctor · 08-19-2010, 05:56 PM

Xorg will use your xorg.conf file if it exists. I need one to get the full 1680x1050 resolution of my monitor because the monitor reports an invalid EDID. I include an appropriate Modeline in the Monitor section, and list the resolutions I want in the Screen section, just like in the old days.