Ubuntu Hoary Preview, PPC, Apple 20" display goes to sleep

Hi folks,

I just took the plunge and replaced my dying CRT with an Apple 20" Cinema Display. It is beautiful. On a dual 2GHz G5, I had the Hoary Array 4 working great, until the 20" display is connected - the display goes to sleep.

So I thought I'd give the Preview release a whirl. Same thing. Booted to single user mode and edited the inittab to always boot to init level 1. Works fine, but as soon as X is started, the display goes to sleep. Weird huh?

I hooked up the old CRT and the system works, can login through X, etc. I plug-in the 20" Apple, and the display goes to sleep immediately.

Anyone else seen this? The display is connected to the DVI (not ADC) connector on the stock ATI 9600 card, and the xorg.conf file was auto generated by the Ubuntu installer - looks good, but I can post here if anyone wants to take a looksy.

Hope someone can help,

Jeff

This all might be totally irrelevant on TFTs, but here goes. My only experience with this sort of thing is when a newly connected display can't handle the frequency or display settings that a previous display could (e.g. connect a 14" instead of a 24" which was running 1600x1200x100hz). Then it kind of errors and goes to power save mode.

Not sure if this is the same with DVI connected displays (guess they should be digital?) but it might be worth reducing the screen refresh rate (e.g. instead of 85hz, try 60hz). Also perhaps try a lower resolution, if the Cinema displays can scale the picture.

The default in the xorg.conf is:

1680x1050
24bpp depth
60hz

Works great in OS X. I did try and see if lower resolutions would work - same problem at 1024x768@60hz. It's almost like X doesn't put the video signal out the DVI connector. Maybe it's sending a signal through the ADC port on the card? I have no way to check as I'd need an ADC-to-DVI adapter.

Wait a sec, that can't be right...the CRT connected to the DVI port (DVI-to-VGA adapter) works great. Bah.

I'll keep Googling for more answers, I appreciate any help,

Jeff

Please post your xorg.conf/XFree86Config (depending on your release) file here as well as the model number of your monitor. Ttyl. Your horizontal and verticle refresh rates might be wrong.

Here it is (I haven't edited - this is the default made by the installer):

# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the /etc/X11/xorg.conf manual page.
# (Type "man /etc/X11/xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following commands:
#
# cp /etc/X11/xorg.conf /etc/X11/xorg.conf.custom
# sudo sh -c 'md5sum /etc/X11/xorg.conf >/var/lib/xfree86/xorg.conf.md5sum'
# sudo dpkg-reconfigure xserver-xorg

Section "Files"
FontPath "unix/:7100" # local font server
# if the local font server has problems, we can fall back on these
FontPath "/usr/lib/X11/fonts/misc"
FontPath "/usr/lib/X11/fonts/cyrillic"
FontPath "/usr/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/lib/X11/fonts/Type1"
FontPath "/usr/lib/X11/fonts/CID"
FontPath "/usr/lib/X11/fonts/100dpi"
FontPath "/usr/lib/X11/fonts/75dpi"
# paths to defoma fonts
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"
EndSection

Section "Module"
Load "bitmap"
Load "dbe"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "record"
Load "type1"
Load "vbe"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "ca"
Option "XkbOptions" "multi,lv3:lwin_switch"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection

Section "Device"
Identifier "ATI Technologies, Inc. Radeon 9600 (R300 AP)"
Driver "ati"
BusID "PCI:240:16:0"
Option "UseFBDev" "true"
EndSection

Section "Monitor"
Identifier "Cinema Displ"
Option "DPMS"
HorizSync 28-84
VertRefresh 43-60
EndSection

Section "Screen"
Identifier "Default Screen"
Device "ATI Technologies, Inc. Radeon 9600 (R300 AP)"
Monitor "Cinema Displ"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1680x1050" "248x198"
EndSubSection
SubSection "Display"
Depth 4
Modes "1680x1050" "248x198"
EndSubSection
SubSection "Display"
Depth 8
Modes "1680x1050" "248x198"
EndSubSection
SubSection "Display"
Depth 15
Modes "1680x1050" "248x198"
EndSubSection
SubSection "Display"
Depth 16
Modes "1680x1050" "248x198"
EndSubSection
SubSection "Display"
Depth 24
Modes "1680x1050" "248x198"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection

Section "DRI"
Mode 0666
EndSection

Check your Monitor's manual for the proper Verticle Refresh and Horizontal Sync rates and see if they match this file. If you don't have the manual, it should be available on Apple's website. I had a similar problem the other day with CentOS 4.0 on X86 with my Dell Monitor and that ended up being the problem.

Hmmm, no where on the Apple website, nor in the manual, can I find any info on the horizontal or vertical refresh rates. I tried bringing the top end for vertical refresh down to 60 from 75 - no better, still sleeps. Perhaps I'll have to try YellowDog again, since the guys at Terrasoft apparently have it working...

Jeff

Sorry, I was wrong. I didn't mean Refresh Rates, I meant Sync Rates. Try using Google to find the information, or post your monitor model number so we can help.

It's the Apple 20 inch LCD display, model M9177LL/A on the website. Here's the tech specs page:

http://www.apple.com/ca/displays/specs.html

Maybe I'm blind - I can't find anything on refresh / sync rates, on Apple's site and Google was my friend...but not today.

J.

Sorry, I could not find everything. Call Apple and ask them, they should help u, its not like it is source code they would be giving you.

Hi,

I got much the same setup!!! I too have a 9600 Radeon with a 20" Cinema Display.

I did have "some" success in getting this to work.

Caveat: I "only" can get the 1400x1050 resolution to work,no others

Even though I get a display, the right 1/3 of the screen is all distorted. I guess better than nothing, but not very good.


Here's what I did to at least get the screen to come alive:

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "LCD Panel 1680x1050"
DisplaySize 360 270
HorizSync 31.5 - 90.0
VertRefresh 60.0 - 60.0
Option "dpms"
Option "MonitorLayout" "TMDS,CRT"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "radeon"
VendorName "Videocard vendor"
BoardName "ATI Radeon 9600"
Option "ConnectedMonitor" "DFP"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 16
Modes "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1400x1050" "1280x1024" "1280x960" "1024x768" "800x600" "640x480"
EndSubSection

Since the Hoary release, the 23" display works out of the box (in my case using the 'nv' or 'nvidia' driver). So my xorg.conf is very dull and standard. I guess the same goes for the 20" model.

Section "Monitor"
Identifier "Apple HD Cinema Display 23inch"
Option "DPMS"
### I had to use the sync-rates below to get Warty running
### obviously they are wrong as the display only supports 60Hz vert refresh
#HorizSync 31.50-110.00
#VertRefresh 50.00-75.00
EndSection

Section "Screen"
Identifier "Default Screen"
Device "NVIDIA Corporation NV25GL [Quadro4 900 XGL]"
Monitor "Apple HD Cinema Display 23inch"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1920x1200" "1400x1050" "1200x800" "1024x768" "800x600" "640x480"
EndSubSection
EndSection


In Warty (and Hoary unstable) I had to use the VertRefresh and HorizSync rates (see the commented out lines).

I guess this patch, which is apparently included in Hoary) explains it:
http://lists.freedesktop.org/piperma...il/007345.html

Hope this helps you out,
Ronald