Hello All.
I use D-link Kvm Switches and When I back to my Linux via this Switch, My Desktop Resolution changed and become very Large Icons, I use below command to back it to Normal Resolution but my monitor OFF and I must Reboot the system :

xrandr -s 1027x768

I use Debian System.

How can I solve it ?

Thanks

AGAIN you are not providing ANY useful details. Like what the "large icons" resolution is, what model Dlink KVM you're using, what kind of monitor, etc. Not sure why we have to keep telling you these things after so many posts, nor why you ignore it. And what do you mean by "my monitor OFF and I must reboot"? Do you mean when you turn your monitor off, it REBOOTS your system? To get the picture back you have to reboot? And have you tried just restarting X, with a CTRL-ALT-Backspace?

And you can 'solve it' by reading the manual on the hardware you have. There are several versions, different firmware, with different hardware options. Some support different resolutions.

Not worked

Seriously?? Why, exactly, do you expect people to continue to try to help you, when you IGNORE WHAT IS SAID TO YOU??? AGAIN: You need to PROVIDE DETAILS. Just saying "not worked", tells us exactly NOTHING.

WHAT "not worked"? What did you do/try? You don't answer ANY of the questions asked of you, and typically don't. Unless you start cooperating with others here, and answering questions, and giving details, there is NO POINT IN YOU POSTING HERE AT ALL.

Hey, You just ask some questions that not help me. I guess you want to launch a Social Engineering. I told you that I use Debian 7.

---------- Post added 10-22-14 at 01:03 PM ----------

It is very similar in Windows users too, when a Windows user use KVM, The Display changed .

It is very similar in Windows users too, when a Windows user use KVM, The Display changed .

The QUESTIONS aren't the issue...YOU DID NOT ANSWER THEM IS. If you don't say what you did/tried, how can ANYONE tell you anything?
No idea what you're even talking about.
No, you said you use "Debian system"...go back and re-read your first post. And you were also asked what model switch, and several OTHER questions that you just flat out ignored. AGAIN: answer questions asked, acknowledge what's been told to you, and you can get help. You've been here long enough, and have been told enough times to provide details, that you should KNOW THIS BY NOW.
...and back to YOU PROVIDE NO DETAILS. Windows WHAT??? What do you mean by "display changed"??? Is this the same switch/hardware, with a different OS? If so, then (AGAIN), things are pointing BACK to the KVM, which you STILL don't give us any details about.

I have a kvm that causes display resolution problems. I think it's because the kvm doesn't pass EDID information from the monitor. The only solution I found was to use a different kvm.

http://en.wikipedia.org/wiki/Extende...ification_data

Exactly the kind of thing I've been trying to get the OP to answer. Some KVM's won't, some have BIOS issues that can be fixed with an upgrade, and some are low-end models that wont' do ANY high-res at all.

I update my BIOS and I hope my problem Solved

Wow, great...you still don't tell us what model the KVM was; if other users come here looking for a solution, they're not going to be able to find it, since you haven't shared any details.

My problem not solved .
The KVM model is "d-link kvm switch 121".

Export your monitor's EDID to file. Add "CustomEDID" option to xorg.conf, this option must point to saved EDID file.
"CustomEDID" = "/where/your/file/saved"
Instead of trying to retrieve EDID from monitor (that impossible when monitor disconnected by switch), driver will use settings from your file.

1 members found this post helpful.

How can I create a custom EDID on debian 7?
I don't install my Nvidia Graphic cars and I use NOUVEAU. In your opinion can it make any problem?

get-edid: get-edid version 2.0.0

Performing real mode VBE call
Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
mem_write: address 0x7fff276cffe8 out of range!
halt_sys: file, line -1466161408

I have not any xorg.conf in /etc/X11 and when I try to create it via "Xorg -configure" it told me that can't create it and forward me to "cat /root/xorg.conf.new" :

Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
Screen 2 "Screen2" RightOf "Screen1"
Screen 3 "Screen3" RightOf "Screen2"
Screen 4 "Screen4" RightOf "Screen3"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "built-ins"
EndSection

Section "Module"
Load "glx"
Load "extmod"
Load "dri"
Load "record"
Load "dbe"
Load "dri2"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Monitor"
Identifier "Monitor2"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Monitor"
Identifier "Monitor3"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Monitor"
Identifier "Monitor4"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
### <percent>: "<f>%"
### [arg]: arg optional
#Option "SWcursor" # [<bool>]
#Option "HWcursor" # [<bool>]
#Option "NoAccel" # [<bool>]
#Option "ShadowFB" # [<bool>]
#Option "VideoKey" # <i>
#Option "WrappedFB" # [<bool>]
#Option "GLXVBlank" # [<bool>]
#Option "ZaphodHeads" # <str>
#Option "PageFlip" # [<bool>]
#Option "SwapLimit" # <i>
#Option "AsyncUTSDFS" # [<bool>]
Identifier "Card0"
Driver "nouveau"
BusID "PCI:1:0:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
### <percent>: "<f>%"
### [arg]: arg optional
#Option "ShadowFB" # [<bool>]
#Option "Rotate" # <str>
#Option "fbdev" # <str>
#Option "debug" # [<bool>]
Identifier "Card1"
Driver "fbdev"
BusID "PCI:0:2:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
### <percent>: "<f>%"
### [arg]: arg optional
#Option "ShadowFB" # [<bool>]
#Option "Rotate" # <str>
#Option "fbdev" # <str>
#Option "debug" # [<bool>]
Identifier "Card2"
Driver "fbdev"
BusID "PCI:1:0:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
### <percent>: "<f>%"
### [arg]: arg optional
#Option "ShadowFB" # [<bool>]
#Option "DefaultRefresh" # [<bool>]
#Option "ModeSetClearScreen" # [<bool>]
Identifier "Card3"
Driver "vesa"
BusID "PCI:0:2:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
### <percent>: "<f>%"
### [arg]: arg optional
#Option "ShadowFB" # [<bool>]
#Option "DefaultRefresh" # [<bool>]
#Option "ModeSetClearScreen" # [<bool>]
Identifier "Card4"
Driver "vesa"
BusID "PCI:1:0:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Card1"
Monitor "Monitor1"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen2"
Device "Card2"
Monitor "Monitor2"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen3"
Device "Card3"
Monitor "Monitor3"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen4"
Device "Card4"
Monitor "Monitor4"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection


I have one monitor but I see four here!!!!