Screen Resolution. I think kde is screwing it up?

short101 · 08-18-2004, 11:14 PM

Did an install of Sarge, the other day, and mostly went very well.

I had to rundpkg-reconfigure xserver-xfree86 a couple of times and finally got my screen to show a decent resolution. Firstly, I should say, it's an ibm 15 sxga+ tft lcd. When the kernel loads, its shows my resolution as 1400 by 1050, but when KDE starts my resolution is set at 1280 by 1024. If I try to change it, then the screen becomes totally unreadable. Also, one line on my screen looks good (the text) then the next is slightly blurred, then the next is good etc. I've got a ati 7500 mobility which the driver for is loading and the memory size for it, shows correct. I've looked on the ibm web site for the refresh rates but always seem to go around in circles there

But have found a page on the web, but I cant make much sense of it. Maybe someone here can. Its here I am worried about this blurred line thing and the garbled screen when I reset my resolution, that I may damage my screen. Heres some lines from my xfree 86 log
[32] 0 0 0x000003b0 - 0x000003bb (0xc) IS[B]
[33] 0 0 0x000003c0 - 0x000003df (0x20) IS[B]
(II) Setting vga for screen 0.
(II) RADEON(0): MMIO registers at 0xc0100000
(WW) System lacks support for changing MTRRs
(II) Loading sub module "vgahw"
(II) LoadModule: "vgahw"
(II) Loading /usr/X11R6/lib/modules/libvgahw.a
(II) Module vgahw: vendor="The XFree86 Project"
compiled for 4.3.0.1, module version = 0.1.0
ABI class: XFree86 Video Driver, version 0.6
(II) RADEON(0): vgaHWGetIOBase: hwp->IOBase is 0x03d0, hwp->PIOOffset is 0x0000
(II) RADEON(0): PCI bus 1 card 0 func 0
(**) RADEON(0): Depth 24, (--) framebuffer bpp 32
(II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
(==) RADEON(0): Default visual is TrueColor
(==) RADEON(0): RGB weight 888
(II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
(II) Loading sub module "int10"
(II) LoadModule: "int10"
(II) Reloading /usr/X11R6/lib/modules/linux/libint10.a
(II) RADEON(0): initializing int10
(II) RADEON(0): Primary V_BIOS segment is: 0xc000
(--) RADEON(0): Chipset: "ATI Radeon Mobility M7 LW (AGP)" (ChipID = 0x4c57)
(--) RADEON(0): Linear framebuffer at 0xe0000000
(--) RADEON(0): VideoRAM: 32768 kByte (64 bit DDR SDRAM)
(II) RADEON(0): AGP card detected
(II) Loading sub module "ddc"
(II) LoadModule: "ddc"
(II) Reloading /usr/X11R6/lib/modules/libddc.a
(II) Loading sub module "i2c"
(II) LoadModule: "i2c"
(II) Loading /usr/X11R6/lib/modules/libi2c.a
(II) Module i2c: vendor="The XFree86 Project"
compiled for 4.3.0.1, module version = 1.2.0
ABI class: XFree86 Video Driver, version 0.6
(II) RADEON(0): I2C bus "DDC" initialized.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): DDC Type: 2, Detected Type: 0
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): DDC Type: 4, Detected Type: 0
(II) RADEON(0): Non-DDC laptop panel detected
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): DDC Type: 3, Detected Type: 0
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) RADEON(0): I2C device "DDC:ddc2" removed.
(II) RADEON(0): DDC Type: 4, Detected Type: 0
(II) RADEON(0): Displays Detected: Monitor1--Type 2, Monitor2--Type 0

(II) RADEON(0):
(II) RADEON(0): Primary Display == Type 2
(II) RADEON(0): Panel ID string: Samsung LTN150P1-L02
(II) RADEON(0): Panel Size from BIOS: 1400x1050
(II) RADEON(0): BIOS provided dividers will be used.
(==) RADEON(0): Using gamma correction (1.0, 1.0, 1.0)
(II) RADEON(0): Validating modes on Primary head ---------
(II) RADEON(0): Total number of valid DDC mode(s) found: 0
(II) RADEON(0): Valid mode using on-chip RMX: 1280x1024
(II) RADEON(0): Total number of valid FP mode(s) found: 1
(--) RADEON(0): Virtual size is 1280x1024 (pitch 1280)
(**) RADEON(0): *Mode "1280x1024": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "1280x1024" 108.00 1280 34208 34320 1688 1024 1050 1053 1063
(**) RADEON(0): Default mode "640x350": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "640x350" 108.00 640 34208 34320 1688 350 1050 1053 1063
(**) RADEON(0): Default mode "640x400": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "640x400" 108.00 640 34208 34320 1688 400 1050 1053 1063
(**) RADEON(0): Default mode "720x400": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "720x400" 108.00 720 34208 34320 1688 400 1050 1053 1063
(**) RADEON(0): Default mode "640x480": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "640x480" 108.00 640 34208 34320 1688 480 1050 1053 1063
(**) RADEON(0): Default mode "800x600": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "800x600" 108.00 800 34208 34320 1688 600 1050 1053 1063
(**) RADEON(0): Default mode "1024x768": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "1024x768" 108.00 1024 34208 34320 1688 768 1050 1053 1063
(**) RADEON(0): Default mode "1152x864": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "1152x864" 108.00 1152 34208 34320 1688 864 1050 1053 1063
(**) RADEON(0): Default mode "1280x960": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "1280x960" 108.00 1280 34208 34320 1688 960 1050 1053 1063
(**) RADEON(0): Default mode "832x624": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "832x624" 108.00 832 34208 34320 1688 624 1050 1053 1063
(**) RADEON(0): Default mode "1152x768": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "1152x768" 108.00 1152 34208 34320 1688 768 1050 1053 1063
(**) RADEON(0): Default mode "1400x1050": 108.0 MHz (scaled from 0.0 MHz), 64.0 kHz, 60.2 Hz
(II) RADEON(0): Modeline "1400x1050" 108.00 1400 34208 34320 1688 1050 1050 1053 1063
(==) RADEON(0): DPI set to (75, 75)
(II) Loading sub module "fb"
(II) LoadModule: "fb"
(II) Loading /usr/X11R6/lib/modules/libfb.a

So it looks like the driver is loading ok and it detects the right screen, so thats why I was wondering if maybe its KDE having the problem. Hers the relevant part of my xfree config file.

Section "Device"
Identifier "ati mobility radeon 7500"
Driver "ati"
EndSection
Section "Monitor"
Identifier "ibm 15 sxga+"
HorizSync 30-60
VertRefresh 50-75
Option "DPMS"
EndSection
Section "Screen"
Identifier "Default Screen"
Device "ati mobility radeon 7500"
Monitor "ibm 15 sxga+"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1280x1024"
EndSubSection
SubSection "Display"
Depth 4
Modes "1280x1024"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x1024"
EndSubSection
SubSection "Display"
Depth 15
Modes "1280x1024"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x1024"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024"
EndSubSection
EndSection
Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "Generic Mouse"
EndSection
Section "DRI"
Mode 0666
EndSection

When I would run dpkg configure xfree86, the 1400 by 1050 resolution wouldnt be there so I picked the next lowest resolution. Maybe is this the problem? Any advice always appreciated.

misterflibble · 08-20-2004, 10:16 AM

This looks fairly easy to fix. I think you're right that it's related to you picking the closest resolution in dpkg-reconfigure. It's definitely detecting 1400x1050 as a valid mode, but your Display sections only allow 1280x1024. If you change each of these sections to read:

Modes "1400x1050" "1280x1024"

it should work.

short101 · 08-20-2004, 11:43 PM

You were right misterflibble, it was easy to fix and now I have 1400x1050 resolution and no more blurry lines

. I had read about doing that but was a bit paranoid about playing with it for fear of damaging my monitor as I thought it was a little more complex than that. Thank you very much.