Hi everybody,

maybe someone can help with the following question. I have just installed a Slack10 running Xorg6.7 on a PIII 800 Mhz with a ATI Rage Fury (32 Mgs memory on board); my monitor is a LG Flatron 775FT.
As default screen resolution I'd like to set the 1152x864 mode (it is one of the choices the utility xorgconfig allows me to set). Unfortunately, Xorg doesn't accept this and jumps directly the 1024x768 pixels mode. I poked here and there on the config file, with no result. I'm sure this is no hardware limit, since Win 98 does the job without pains.

Here below I paste the most significant parts of the Xorg log file:

(==) Log file: "/var/log/Xorg.0.log", Time: Sun Nov 28 16:11:52 2004
(==) Using config file: "/etc/X11/xorg.conf"
(==) ServerLayout "Simple Layout"
(**) |-->Screen "Screen 1" (0)
(**) | |-->Monitor "Flatron775FT"
(**) | |-->Device "** ATI Rage 128 based (generic) [r128]"
....

(II) R128(0): PCI bus 1 card 0 func 0
(**) R128(0): Depth 16, (--) framebuffer bpp 16
(II) R128(0): Pixel depth = 16 bits stored in 2 bytes (16 bpp pixmaps)
(==) R128(0): Default visual is TrueColor
(==) R128(0): RGB weight 565
(II) R128(0): Using 6 bits per RGB (8 bit DAC)
(II) Loading sub module "int10"
(II) LoadModule: "int10"
(II) Loading /usr/X11R6/lib/modules/linux/libint10.a
(II) Module int10: vendor="X.Org Foundation"
compiled for 6.7.0, module version = 1.0.0
ABI class: X.Org Video Driver, version 0.7
(II) R128(0): initializing int10
(II) R128(0): Primary V_BIOS segment is: 0xc000
(--) R128(0): Chipset: "ATI Rage 128 Pro GL PF (AGP)" (ChipID = 0x5046)
(--) R128(0): Linear framebuffer at 0xec000000
(--) R128(0): MMIO registers at 0xeb000000
(--) R128(0): BIOS at 0xebfe0000
(--) R128(0): VideoRAM: 32768 kByte (64-bit SDR SGRAM 1:1)
(**) R128(0): Using external CRT for display
(WW) R128(0): Can't determine panel dimensions, and none specified. Disabling programming of FP registers.
(II) R128(0): PLL parameters: rf=2700 rd=60 min=12500 max=40000; xclk=12000

....

(II) R128(0): Supported VESA Video Modes:
(II) R128(0): 720x400@70Hz
(II) R128(0): 720x400@88Hz
(II) R128(0): 640x480@60Hz
(II) R128(0): 640x480@67Hz
(II) R128(0): 640x480@72Hz
(II) R128(0): 640x480@75Hz
(II) R128(0): 800x600@56Hz
(II) R128(0): 800x600@60Hz
(II) R128(0): 800x600@72Hz
(II) R128(0): 800x600@75Hz
(II) R128(0): 832x624@75Hz
(II) R128(0): 1024x768@87Hz (interlaced)
(II) R128(0): 1024x768@60Hz
(II) R128(0): 1024x768@70Hz
(II) R128(0): 1024x768@75Hz
(II) R128(0): 1152x870@75Hz
(II) R128(0): Manufacturer's mask: 0
(II) R128(0): Supported Future Video Modes:
(II) R128(0): #0: hsize: 640 vsize 480 refresh: 75 vid: 20273
(II) R128(0): #1: hsize: 640 vsize 480 refresh: 85 vid: 22833
(II) R128(0): #2: hsize: 800 vsize 600 refresh: 75 vid: 20293
(II) R128(0): #3: hsize: 800 vsize 600 refresh: 85 vid: 22853
(II) R128(0): #4: hsize: 1024 vsize 768 refresh: 75 vid: 20321
(II) R128(0): #5: hsize: 1024 vsize 768 refresh: 85 vid: 22881
(II) R128(0): #6: hsize: 1280 vsize 1024 refresh: 60 vid: 32897
(II) R128(0): #7: hsize: 832 vsize 624 refresh: 75 vid: 20297
(II) R128(0): Supported additional Video Mode:
(II) R128(0): clock: 36.0 MHz Image Size: 310 x 230 mm
(II) R128(0): h_active: 640 h_sync: 696 h_sync_end 752 h_blank_end 832 h_border: 0
(II) R128(0): v_active: 480 v_sync: 481 v_sync_end 484 v_blanking: 509 v_border: 0
(II) R128(0): Supported additional Video Mode:
(II) R128(0): clock: 108.0 MHz Image Size: 310 x 230 mm
(II) R128(0): h_active: 1280 h_sync: 1328 h_sync_end 1440 h_blank_end 1688 h_border: 0
(II) R128(0): v_active: 1024 v_sync: 1025 v_sync_end 1028 v_blanking: 1066 v_border: 0
(II) R128(0): Ranges: V min: 50 V max: 160 Hz, H min: 30 H max: 70 kHz, PixClock max 110 MHz
(II) R128(0): Monitor name: FLATRON 775FT
(==) R128(0): Using gamma correction (1.0, 1.0, 1.0)
(==) R128(0): Write-combining range (0xec000000,0x2000000)
(II) Loading sub module "i2c"

....

(EE) R128(0): No DFP detected
(II) R128(0): Flatron775FT: Using hsync range of 31.50-64.30 kHz
(II) R128(0): Flatron775FT: Using vrefresh range of 50.00-75.00 Hz
(II) R128(0): Clock range: 12.50 to 400.00 MHz
(II) R128(0): Not using default mode "640x350" (vrefresh out of range)
(II) R128(0): Not using default mode "320x175" (vrefresh out of range)
(II) R128(0): Not using default mode "640x400" (vrefresh out of range)
(II) R128(0): Not using default mode "320x200" (vrefresh out of range)
(II) R128(0): Not using default mode "720x400" (vrefresh out of range)
(II) R128(0): Not using default mode "360x200" (vrefresh out of range)
(II) R128(0): Not using default mode "640x480" (vrefresh out of range)
(II) R128(0): Not using default mode "320x240" (vrefresh out of range)
(II) R128(0): Not using default mode "800x600" (vrefresh out of range)
(II) R128(0): Not using default mode "400x300" (vrefresh out of range)
(II) R128(0): Not using default mode "1024x768" (vrefresh out of range)
(II) R128(0): Not using default mode "512x384" (vrefresh out of range)
(II) R128(0): Not using default mode "1024x768" (hsync out of range)
(II) R128(0): Not using default mode "512x384" (hsync out of range)
(II) R128(0): Not using default mode "1152x864" (hsync out of range) <---**
(II) R128(0): Not using default mode "576x432" (hsync out of range)
....
<many "Not using default mode" after>

(II) R128(0): Not using mode "1152x864" (no mode of this name)

....

(--) R128(0): Virtual size is 1024x768 (pitch 1024)
(**) R128(0): *Default mode "1024x768": 78.8 MHz, 60.1 kHz, 75.1 Hz
(II) R128(0): Modeline "1024x768" 78.80 1024 1040 1136 1312 768 769 772 800 +hsync +vsync
(**) R128(0): *Default mode "800x600": 49.5 MHz, 46.9 kHz, 75.0 Hz
(II) R128(0): Modeline "800x600" 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync
(**) R128(0): Default mode "1024x768": 75.0 MHz, 56.5 kHz, 70.1 Hz
(II) R128(0): Modeline "1024x768" 75.00 1024 1048 1184 1328 768 771 777 806 -hsync -vsync
(**) R128(0): Default mode "1024x768": 65.0 MHz, 48.4 kHz, 60.0 Hz
(II) R128(0): Modeline "1024x768" 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
(**) R128(0): Default mode "832x624": 57.3 MHz, 49.7 kHz, 74.6 Hz
(II) R128(0): Modeline "832x624" 57.28 832 864 928 1152 624 625 628 667 -hsync -vsync

etc...

suggestions?
thanks in advance.