I've recently had to uninstall and reinstall KDE and X11. As result of the reinstall I cannot get X11 to work. The obvious error in the Xorg.0.log is:

Fatal server error:
xf86MapVidMem: failed to open /dev/mem (No such file or directory)

Indeed, that device is missing. I assume it must be some kind of driver but I don't know how to create it. Can someone tell me what package is supposed to contain that device? TIA.

mknod /dev/mem c 1 1
chgrp kmem /dev/mem
chmod 640 /dev/mem

This series of commands, found @ google, for creating that character device file
reflects how it has been created on my file system, so you might
try doing that, as root.

It doesn't belong to any package and I don't know how it is created,
normally, so there might be fundamental issues with your installation.

One other thing you could try is reconfiguring X, after logging in as
root:

drakx11

Guessing, not knowing.

Thanks for the reply. I did as you suggest and there is still something missing. When I run drakx11 and try to test the configuration I get this:

An error occurred: │
│ (EE) intel(0): [drm] Failed to open DRM device for : No such file or │
│ directory │
│ (EE) intel(0): Failed to become DRM master.

In addition, the Xorg.0.log is now complaining about missing AGP GART support. What package is that?

Are you still running 2007 free, as in your posting tags?

There have been occasions when testing the X configuration would be better skipped. You might try that.

grep EE /var/log/Xorg.0.log

will extract the most problematic clues from the log, although not all are fatal. How are you able to transcribe the errors here without X?

In case you are actually on 2010, there is an erratum for Intel chipsets, so more information about your mobo and distro release specifications might be pertinent. However, it seems to me, still, something more fundamental is broken. How, exactly, did you uninstall/reinstall kde and X11?

Sorry, I did not update my profile. I am indeed running 2010.0. In fact that is what caused all this trouble, as per usual with Mandriva updates many things were broken. The way it came about was that after the upgrade I noticed my root file system was full. Unknown to me until after the damage to X, that was caused by a broken Samba which did not mount the volume on which my backup gets stored. So the backup saved everything under the mount point. Anyway, I found Oxygen was taking up a lot of space and not knowing it was part of KDE at the time, uninstalled it. That also uninstalled KDE and apparently parts of X11. I've since reinstalled KDE and X11 best I could but apparently am still missing things.

I copy and paste to here via a remote shell and command line. Generally every thing is working (that particular machine is a server) except X/KDE.

Thanks again.

There are many ways to bork a system, only one or two proper ways of accomplishing something, such is the nature of a computer. That is why I asked "exactly" what did you do, which boils down to actual commands, steps in the gui. Did you use --force or --nodeps, for example. Were you prompted to remove all of kde before committing? Usually, that is a necessary step for removing software. While it's easy to break an installation, re-tracing steps to recover is not so easy. I don't have experience with Samba mounts, so can't comment on those issues but I don't find that Mandriva update typically breaks the system. Not knowing what has happened, exactly, I am reminded that there are meta packages that, when installed with urpmi, should pull in the necessary dependencies:

so

for example, might help, should be safe to try. Maybe the -minimal package would be more appropriate for your setup, can't say.

to see free space might be a good idea in case that is an issue.

Thanks again for the reply. Recalling 'exactly' what I did is impossible at this point as I was very frustrated at the time because so much breaks with every Mandriva upgrade. At that time I was just trying to free up space which is what I though the problem was with other services. Best I can recall I did an 'urpme Oxygen' and then 'urpme --auto-orphans'.

To reinstall I did use 'urpmi -v task-kde4 task-x11' and rerunning it now says they are already installed. There was also a couple of other packages I tried installing as well:

kdebase4
x11-driver-video-fbdev
4x11-server-xfbdev

When running drakx11, can you skip the test? Also, if that doesn't help,

grep EE /var/log/Xorg.0.log

after a failure of X to start should reveal all the interesting errors, which you could post here.

Note that the most recent load of X is logged to Xorg.0.log and the one prior to that is at Xorg.0.log.old

What is the video adapter on that machine, in particular, the chipset from Intel that runs it?

Here is the Xorg.0.log:

X.Org X Server 1.6.5
Release Date: 2009-10-11
X Protocol Version 11, Revision 0
Build Operating System: Linux_2.6.22.18-server-1mdv Mandriva
Current Operating System: Linux dap002 2.6.24.4-server-1mnb #1 SMP Thu Mar 27 15
:07:48 CET 2008 i686
Build Date: 13 October 2009 12:19:57PM

Before reporting problems, check http://qa.mandriva.com
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sun Dec 6 12:06:53 2009
(==) Using config file: "/etc/X11/xorg.conf"
(==) ServerLayout "layout1"
(**) |-->Screen "screen1" (0)
(**) | |-->Monitor "monitor1"
(**) | |-->Device "device1"
(**) Option "DontZap" "False"
(**) Option "AllowMouseOpenFail"
(==) Automatically adding devices
(==) Automatically enabling devices
(==) FontPath set to:
catalogue:/etc/X11/fontpath.d
(==) ModulePath set to "/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
(II) Cannot locate a core pointer device.
(II) Cannot locate a core keyboard device.
(II) The server relies on HAL to provide the list of input devices.
If no devices become available, reconfigure HAL or disable AllowEmptyInp
ut.
(II) Loader magic: 0x3bc0
(II) Module ABI versions:
X.Org ANSI C Emulation: 0.4
X.Org Video Driver: 5.0
X.Org XInput driver : 4.0
X.Org Server Extension : 2.0
(II) Loader running on linux
(++) using VT number 7

(--) PCI:*(0:0:2:0) 8086:2562:0e11:00b9 Intel Corporation 82845G/GL[Brookdale-G]
/GE Chipset Integrated Graphics Device rev 1, Mem @ 0xf0000000/134217728, 0xfc40
0000/524288
(II) Open ACPI successful (/var/run/acpid.socket)
(II) System resource ranges:
[0] -1 0 0xffffffff - 0xffffffff (0x1) MX[B]
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[5] -1 0 0x00000000 - 0x00000000 (0x1) IX[B]
(II) "extmod" will be loaded. This was enabled by default and also specified in
the config file.
(II) "dbe" will be loaded. This was enabled by default and also specified in the
config file.
(II) "glx" will be loaded. This was enabled by default and also specified in the
config file.
(II) "record" will be loaded by default.
(II) "dri" will be loaded. This was enabled by default and also specified in the
config file.
(II) "dri2" will be loaded by default.
(II) LoadModule: "dbe"
(II) Loading /usr/lib/xorg/modules/extensions//libdbe.so
(II) Module dbe: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension DOUBLE-BUFFER
(II) LoadModule: "v4l"
(II) Loading /usr/lib/xorg/modules/drivers//v4l_drv.so
(II) Module v4l: vendor="X.Org Foundation"
compiled for 1.6.2, module version = 0.1.1
ABI class: X.Org Video Driver, version 5.0
(II) LoadModule: "extmod"
(II) Loading /usr/lib/xorg/modules/extensions//libextmod.so
(II) Module extmod: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension Multi-Buffering
(II) Loading extension MIT-SCREEN-SAVER
(II) Loading extension XFree86-VidModeExtension
(II) Loading extension XFree86-DGA
(II) Loading extension DPMS
(II) Loading extension XVideo
(II) Loading extension XVideo-MotionCompensation
(II) Loading extension X-Resource
(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions//libglx.so
(II) Module glx: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
ABI class: X.Org Server Extension, version 2.0
(==) AIGLX enabled
(II) Loading extension GLX
(II) LoadModule: "dri"
(II) Loading /usr/lib/xorg/modules/extensions//libdri.so
(II) Module dri: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension XFree86-DRI
(II) LoadModule: "record"
(II) Loading /usr/lib/xorg/modules/extensions//librecord.so
(II) Module record: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.13.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension RECORD
(II) LoadModule: "dri2"
(II) Loading /usr/lib/xorg/modules/extensions//libdri2.so
(II) Module dri2: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.1.0
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension DRI2
(II) LoadModule: "intel"
(II) Loading /usr/lib/xorg/modules/drivers//intel_drv.so
(II) Module intel: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 2.9.1
Module class: X.Org Video Driver
ABI class: X.Org Video Driver, version 5.0
(II) v4l driver for Video4Linux
(II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
i810-dc100, i810e, i815, i830M, 845G, 852GM/855GM, 865G, 915G,
E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
4 Series, G45/G43, Q45/Q43, G41, B43, Clarkdale, Arrandale
(II) Primary Device is: PCI 00@00:02:0
(WW) Falling back to old probe method for v4l
(II) resource ranges after probing:
[0] -1 0 0xffffffff - 0xffffffff (0x1) MX[B]
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[5] -1 0 0x00000000 - 0x00000000 (0x1) IX[B]
(II) Loading sub module "vgahw"
(II) LoadModule: "vgahw"
(II) Loading /usr/lib/xorg/modules//libvgahw.so
(II) Module vgahw: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 0.1.0
ABI class: X.Org Video Driver, version 5.0
(II) Loading sub module "ramdac"
(II) LoadModule: "ramdac"
(II) Module "ramdac" already built-in
drmOpenDevice: node name is /dev/dri/card0
drmOpenByBusid: Searching for BusID pci:0000:00:02.0
drmOpenDevice: node name is /dev/dri/card0
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card1
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card2
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card3
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card4
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card5
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card6
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card7
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card8
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card9
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card10
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card11
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card12
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card13
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card14
drmOpenByBusid: drmOpenMinor returns -1
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: node name is /dev/dri/card1
drmOpenDevice: node name is /dev/dri/card2
drmOpenDevice: node name is /dev/dri/card3
drmOpenDevice: node name is /dev/dri/card4
drmOpenDevice: node name is /dev/dri/card5
drmOpenDevice: node name is /dev/dri/card6
drmOpenDevice: node name is /dev/dri/card7
drmOpenDevice: node name is /dev/dri/card8
drmOpenDevice: node name is /dev/dri/card9
drmOpenDevice: node name is /dev/dri/card10
drmOpenDevice: node name is /dev/dri/card11
drmOpenDevice: node name is /dev/dri/card12
drmOpenDevice: node name is /dev/dri/card13
drmOpenDevice: node name is /dev/dri/card14
(EE) intel(0): [drm] Failed to open DRM device for : No such file or directory
(EE) intel(0): Failed to become DRM master.
(**) intel(0): Depth 24, (--) framebuffer bpp 32
(==) intel(0): RGB weight 888
(==) intel(0): Default visual is TrueColor
(II) intel(0): Integrated Graphics Chipset: Intel(R) 845G
(--) intel(0): Chipset: "845G"
(--) intel(0): Linear framebuffer at 0xF0000000
(--) intel(0): IO registers at addr 0xFC400000 size 524288
(WW) intel(0): libpciaccess reported 0 rom size, guessing 64kB
(II) intel(0): No SDVO device is found in VBT
(II) intel(0): 1 display pipe available.
(II) Loading sub module "ddc"
(II) LoadModule: "ddc"
(II) Module "ddc" already built-in
(II) Loading sub module "i2c"
(II) LoadModule: "i2c"
(II) Module "i2c" already built-in
(II) intel(0): Output VGA using monitor section monitor1
(II) intel(0): I2C bus "DVODDC_D" initialized.
(II) Loading sub module "sil164"
(II) LoadModule: "sil164"
(II) Loading /usr/lib/xorg/modules/drivers//sil164.so
(II) Module sil164: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
ABI class: X.Org Video Driver, version 5.0
(II) intel(0): I2C bus "DVOI2C_E" initialized.
(II) Loading sub module "ch7xxx"
(II) LoadModule: "ch7xxx"
(II) Loading /usr/lib/xorg/modules/drivers//ch7xxx.so
(II) Module ch7xxx: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
ABI class: X.Org Video Driver, version 5.0
(II) intel(0): I2C bus "DVOI2C_E" removed.
(II) intel(0): I2C bus "DVOI2C_E" initialized.
(II) Loading sub module "ivch"
(II) LoadModule: "ivch"
(II) Loading /usr/lib/xorg/modules/drivers//ivch.so
(II) Module ivch: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
ABI class: X.Org Video Driver, version 5.0
(II) intel(0): I2C bus "DVOI2C_E" removed.
(II) intel(0): I2C bus "DVOI2C_B" initialized.
(II) Loading sub module "tfp410"
(II) LoadModule: "tfp410"
(II) Loading /usr/lib/xorg/modules/drivers//tfp410.so
(II) Module tfp410: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
ABI class: X.Org Video Driver, version 5.0
(II) intel(0): I2C bus "DVOI2C_B" removed.
(II) intel(0): I2C bus "DVOI2C_E" initialized.
(II) Loading sub module "ch7017"
(II) LoadModule: "ch7017"
(II) Loading /usr/lib/xorg/modules/drivers//ch7017.so
(II) Module ch7017: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
ABI class: X.Org Video Driver, version 5.0
(II) intel(0): I2C bus "DVOI2C_E" removed.
(II) intel(0): I2C bus "DVOI2C_E" initialized.
(II) intel(0): I2C bus "DVOI2C_E" removed.
(II) intel(0): I2C bus "DVODDC_D" removed.
(II) intel(0): I2C bus "CRTDDC_A" initialized.
(II) intel(0): I2C bus "CRTDDC_A" removed.
(II) intel(0): I2C bus "CRTDDC_A" initialized.
(II) intel(0): I2C device "CRTDDC_A:E-EDID segment register" registered at addre
ss 0x60.
(II) intel(0): I2C device "CRTDDC_A:ddc2" registered at address 0xA0.
(II) intel(0): I2C device "CRTDDC_A:ddc2" removed.
(II) intel(0): I2C device "CRTDDC_A:E-EDID segment register" removed.
(II) intel(0): I2C bus "CRTDDC_A" removed.
(II) intel(0): I2C bus "CRTDDC_D" initialized.
(II) intel(0): I2C device "CRTDDC_D:E-EDID segment register" registered at addre
ss 0x60.
(II) intel(0): I2C device "CRTDDC_D:ddc2" registered at address 0xA0.
(II) intel(0): I2C device "CRTDDC_D:ddc2" removed.
(II) intel(0): I2C device "CRTDDC_D:E-EDID segment register" removed.
(II) intel(0): I2C bus "CRTDDC_D" removed.
(II) intel(0): I2C bus "CRTDDC_E" initialized.
(II) intel(0): I2C device "CRTDDC_E:E-EDID segment register" registered at addre
ss 0x60.
(II) intel(0): I2C device "CRTDDC_E:ddc2" registered at address 0xA0.
(II) intel(0): I2C device "CRTDDC_E:ddc2" removed.
(II) intel(0): I2C device "CRTDDC_E:E-EDID segment register" removed.
(II) intel(0): I2C bus "CRTDDC_E" removed.
(II) intel(0): Output VGA connected
(II) intel(0): Using user preference for initial modes
(II) intel(0): Output VGA using initial mode 1024x768
(II) intel(0): detected 128 kB GTT.
(II) intel(0): detected 8060 kB stolen memory.
(==) intel(0): video overlay key set to 0x101fe
(==) intel(0): Using gamma correction (1.0, 1.0, 1.0)
(==) intel(0): DPI set to (96, 96)
(II) Loading sub module "fb"
(II) LoadModule: "fb"
(II) Loading /usr/lib/xorg/modules//libfb.so
(II) Module fb: vendor="X.Org Foundation"
compiled for 1.6.5, module version = 1.0.0
ABI class: X.Org ANSI C Emulation, version 0.4
(II) intel(0): Comparing regs from server start up to After PreInit
(==) Depth 24 pixmap format is 32 bpp
(II) do I need RAC? No, I don't.
(II) resource ranges after preInit:
[0] -1 0 0xffffffff - 0xffffffff (0x1) MX[B]
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
Fatal server error:
AddScreen/ScreenInit failed for driver 0


Please consult the The X.Org Foundation support
at http://qa.mandriva.com
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional informati
on.

Try following the instructions for the i915 driver bug in this other thread: http://www.linuxquestions.org/questi...5/#post3781738

No joy, same error. Keep in mind that this was working, after a fashion, until I did the uninstall of Oxygen and got myself into this mess. If it was a kernel issue the it would never have worked at all. There still must be some missing component somewhere.

I tried to add my own '/dev/mem' and got a different error complaining about missing AGP GART support. Interestingly, something later removed my '/dev/mem'.