Unsupported signal. Please Check the device output

I get a blank screen and the message “unsupported signal. please check the device output” whenever I try to boot. I can only get into failsafe mode. I tried reinstalling bootloader, installed in safe settings (acpi=off) tried reinstalling several times. Also when I get the error message I have tried Ctrl+Alt+F3 and I see:
Starting firewall Initialization (phase 2 of 2)
Master resource control: runlevel 5 has been
skipped services in runlevel 5
Welcome to opensuse 11.1-kernel 2.6.27.7-9-pae(ttyl)
linux-li9d login:
here I have switched to root and tried running sax2 -r but nothing helps and I keep getting back to the error blank screen. Plz help.
One more thing: when I try a repair install it says that bootloader is not successfully repaired. Is it a Grub issue? should I use Lilo?
Have tried way too much with no success

Looks more like a graphics error,nothing to do with GrUB. What card do you have ? when we know, we will be able to help a bit more

Andy

I have the monitor attached to an NVIDIA GeFORCE 256MB graphics card but have also tried attaching it to the onboard graphics card which is on a :
NVIDIA® GeForce 6100 / nForce 430 chipset
The CPU is an AMD 7750 2.7GHz processor on a gigabyte
GA-M61PME-S2P (rev. 1.0) motherboard with updated bios F2
both ways I get the same error but however with my new setting I havent attached it back to the onboard graphics card so ill try that.
One more thing… the Monitor is a Sony xbr6 LCD HDTV. So Im not sure if that makes a difference because it works just fine in other stages of install and in failsafe mode.

> the Monitor is a Sony xbr6 LCD HDTV.

AH, it sounds like maybe the error “unsupported signal. please check
the device output” might be generated inside the TV…are you able to
output (from either graphics card) a digital TV signal that that TV
will accept???

it may be a matter of reading the Sony’s manual to learn exactly what
kinds of signals it WILL accept, and then the manuals of the onboard
and add-in graphics cards to see what signals they CAN generate…

make sense?


duo

Yes. Let me check into that. Ill let you know if that might be it. Thanks again.

Thanks. That was it. I attached the DVI output of the graphics card to the HDTV and that did it. Before I was using the RGB to RGB and opensuse 11.1 was probably giving a signal reading error.

sshah3 wrote:
> Thanks. That was it. I attached the DVI output of the graphics card to
> the HDTV and that did it. Before I was using the RGB to RGB and
> opensuse 11.1 was probably giving a signal reading error.

happy you got it sorted…

amazing what reading the documentation can do for a problematic
situation…


duo