Since I've installed Mdk-8.2, I run XFree4 with the fbdev driver, 
because I've got a black screen with the ati driver.

I'm trying now to have this latter work.

I've made of diff of two /var/log/XFree86.0.log files, one with fbdev 
driver, the other with the ati one.
What seems signicative to me is a warning in the ati one (more than a 
bunch of unused modelines) :
> (WW) ATI(0): Cannot shadow an accelerated frame buffer.

and the last line of the ati log file :

> (II) ATI(0): Shutting down Xvideo subsystems

Does anybody know what does this mean ?
I've attached the diff file.

I usually boot linux with the accelerated ati console driver (with a 
kernel argument "video = atyfb:accel" ...). I've tried to boot with the 
"novideo" option in BootX (oldworld...). Then my consoles aren't 
accelerated, but I still have the same warning in XFree86.log...

Any other idea ?

Bertrand Dekoninck
13,14c13,14
< (==) Log file: "/var/log/XFree86.0.log", Time: Fri Aug  2 14:28:58 2002
< (==) Using config file: "/etc/X11/XF86Config-4"
---
> (==) Log file: "/var/log/XFree86.1.log", Time: Fri Aug  2 14:31:28 2002
> (++) Using config file: "/home/bertrand/XF86Config-4.old"
17c17
< (**) |   |-->Monitor "Apple|iMac/PowerBook 1024x768"
---
> (**) |   |-->Monitor "Custom"
33c33
< (--) using VT number 7
---
> (--) using VT number 8
157,160c157,161
< (II) LoadModule: "fbdev"
< (II) Loading /usr/X11R6/lib/modules/drivers/fbdev_drv.o
< (II) Module fbdev: vendor="The XFree86 Project"
<       compiled for 4.2.0, module version = 0.1.0
---
> (II) LoadModule: "ati"
> (II) Loading /usr/X11R6/lib/modules/drivers/ati_drv.o
> (II) Module ati: vendor="The XFree86 Project"
>       compiled for 4.2.0, module version = 6.4.7
>       Module class: XFree86 Video Driver
169c170,185
< (II) FBDEV: driver for framebuffer: fbdev, afb
---
> (II) ATI: ATI driver (version 6.4.7) for chipsets: ati
> (II) R128: Driver for ATI Rage 128 chipsets: ATI Rage 128 RE (PCI),
>       ATI Rage 128 RF (AGP), ATI Rage 128 RG (AGP), ATI Rage 128 RK (PCI),
>       ATI Rage 128 RL (AGP), ATI Rage 128 SM (AGP),
>       ATI Rage 128 Pro PD (PCI), ATI Rage 128 Pro PF (AGP),
>       ATI Rage 128 Pro PP (PCI), ATI Rage 128 Pro PR (PCI),
>       ATI Rage 128 Pro ULTRA TF (AGP), ATI Rage 128 Pro ULTRA TL (AGP),
>       ATI Rage 128 Pro ULTRA TR (AGP), ATI Rage 128 Mobility LE (PCI),
>       ATI Rage 128 Mobility LF (AGP), ATI Rage 128 Mobility MF (AGP),
>       ATI Rage 128 Mobility ML (AGP)
> (II) RADEON: Driver for ATI Radeon chipsets: ATI Radeon QD (AGP),
>       ATI Radeon QE (AGP), ATI Radeon QF (AGP), ATI Radeon QG (AGP),
>       ATI Radeon VE QY (AGP), ATI Radeon VE QZ (AGP),
>       ATI Radeon Mobility LW (AGP), ATI Radeon Mobility LY (AGP),
>       ATI Radeon Mobility LZ (AGP), ATI Radeon 8500 QL (AGP),
>       ATI Radeon 8500 BB (AGP), ATI Radeon 7500 QW (AGP)
171,175c187,195
< (II) Loading sub module "fbdevhw"
< (II) LoadModule: "fbdevhw"
< (II) Loading /usr/X11R6/lib/modules/linux/libfbdevhw.a
< (II) Module fbdevhw: vendor="The XFree86 Project"
<       compiled for 4.2.0, module version = 0.0.2
---
> (II) ATI:  Candidate "Device" section "ATI Mach64 VT (264VT)".
> (II) ATI:  Shared PCI/AGP Mach64 in slot 0:17:0 detected.
> (II) ATI:  Shared PCI/AGP Mach64 in slot 0:17:0 assigned to active "Device" section 
>"ATI Mach64 VT (264VT)".
> (II) Loading sub module "atimisc"
> (II) LoadModule: "atimisc"
> (II) Loading /usr/X11R6/lib/modules/drivers/atimisc_drv.o
> (II) Module atimisc: vendor="The XFree86 Project"
>       compiled for 4.2.0, module version = 6.4.7
>       Module class: XFree86 Video Driver
177c197
< (II) resource ranges after xf86ClaimFixedResources() call:
---
> (II) resource ranges after probing:
186,220c206,339
< (**) FBDEV(0): claimed PCI slot 0:17:0
< (II) FBDEV(0): using default device
< (II) resource ranges after probing:
<       [0] -1  0xffffffff - 0xffffffff (0x1) MX[B]
<       [1] -1  0x00000000 - 0x00000000 (0x1) MX[B]
<       [2] -1  0xf3000000 - 0xf307ffff (0x80000) MX[B]
<       [3] -1  0x80800000 - 0x80800fff (0x1000) MX[B]
<       [4] -1  0x81000000 - 0x81ffffff (0x1000000) MX[B](B)
<       [5] 0   0x000a0000 - 0x000affff (0x10000) MS[B]
<       [6] 0   0x000b0000 - 0x000b7fff (0x8000) MS[B]
<       [7] 0   0x000b8000 - 0x000bffff (0x8000) MS[B]
<       [8] -1  0x0000ffff - 0x0000ffff (0x1) IX[B]
<       [9] -1  0x00000000 - 0x00000000 (0x1) IX[B]
<       [10] -1 0x00000400 - 0x000004ff (0x100) IX[B](B)
<       [11] 0  0x000003b0 - 0x000003bb (0xc) IS[B]
<       [12] 0  0x000003c0 - 0x000003df (0x20) IS[B]
< (II) Setting vga for screen 0.
< (**) FBDEV(0): Depth 15, (--) framebuffer bpp 16
< (==) FBDEV(0): RGB weight 555
< (==) FBDEV(0): Default visual is TrueColor
< (==) FBDEV(0): Using gamma correction (1.0, 1.0, 1.0)
< (II) FBDEV(0): Hardware: ATY Mach64 (vidmem: 2044k)
< (II) FBDEV(0): Checking Modes against framebuffer device...
< (II) FBDEV(0):        mode "1024x768" ok
< (II) FBDEV(0):        mode "800x600" ok
< (II) FBDEV(0):        mode "640x480" ok
< (II) FBDEV(0): Checking Modes against monitor...
< (--) FBDEV(0): Virtual size is 1024x768 (pitch 1024)
< (**) FBDEV(0): Mode "1024x768": 78.5 MHz (scaled from 0.0 MHz), 59.9 kHz, 74.8 Hz
< (II) FBDEV(0): Modeline "1024x768"   78.53  1024 1049 1145 1312  768 769 772 800 
+hsync +vsync
< (**) FBDEV(0): Mode "800x600": 62.4 MHz (scaled from 0.0 MHz), 60.0 kHz, 94.9 Hz
< (II) FBDEV(0): Modeline "800x600"   62.36  800 821 901 1040  600 601 604 632 +hsync 
+vsync
< (**) FBDEV(0): Mode "640x480": 49.9 MHz (scaled from 0.0 MHz), 60.0 kHz, 116.7 Hz
< (II) FBDEV(0): Modeline "640x480"   49.89  640 661 725 832  480 481 484 514 +hsync 
+vsync
< (==) FBDEV(0): DPI set to (75, 75)
---
> (==) ATI(0): Chipset:  "ati".
> (**) ATI(0): Depth 15, (--) framebuffer bpp 16
> (--) ATI(0): ATI 264VT graphics controller detected.
> (--) ATI(0): Chip type 5654 "VT", version 0, foundry SGS, class 0, revision 0x01.
> (--) ATI(0): PCI bus interface detected;  block I/O base is 0x0400.
> (--) ATI(0): ATI Mach64 adapter detected.
> (--) ATI(0): Internal RAMDAC (subtype 1) detected.
> (==) ATI(0): RGB weight 555
> (==) ATI(0): Default visual is TrueColor
> (==) ATI(0): Using gamma correction (1.0, 1.0, 1.0)
> (II) ATI(0): Using Mach64 accelerator CRTC.
> (II) ATI(0): Storing hardware cursor image at 0x811FFC00.
> (II) ATI(0): Using 8 MB linear aperture at 0x81800000.
> (!!) ATI(0): Virtual resolutions will be limited to 2047 kB
>  due to linear aperture size and/or placement of hardware cursor image area.
> (II) ATI(0): Using Block 0 MMIO aperture at 0x817FFC00.
> (II) ATI(0): Using Block 1 MMIO aperture at 0x817FF800.
> (II) ATI(0): MMIO write caching enabled.
> (--) ATI(0): 2048 kB of EDO DRAM detected (using 2047 kB).
> (WW) ATI(0): Cannot shadow an accelerated frame buffer.
> (--) ATI(0): Internal programmable clock generator detected.
> (--) ATI(0): Reference clock 157.5/11 (14.318) MHz.
> (II) ATI(0): Custom: Using hsync range of 31.50-64.30 kHz
> (II) ATI(0): Custom: Using vrefresh range of 50.00-90.00 Hz
> (II) ATI(0): Maximum clock:  80.00 MHz
> (II) ATI(0): Not using mode "768x576" (vrefresh out of range)
> (II) ATI(0): Not using mode "800x600" (vrefresh out of range)
> (II) ATI(0): Not using mode "640x480" (vrefresh out of range)
> (II) ATI(0): Not using mode "800x600" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using mode "1024x768" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using mode "1280x1024" (insufficient memory for mode)
> (II) ATI(0): Not using mode "1280x1024" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "512x384" (hsync out of range)
> (II) ATI(0): Not using default mode "1152x864" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using default mode "576x432" (hsync out of range)
> (II) ATI(0): Not using default mode "1280x960" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "1280x960" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "640x512" (hsync out of range)
> (II) ATI(0): Not using default mode "640x512" (hsync out of range)
> (II) ATI(0): Not using default mode "1600x1200" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "1600x1200" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "1600x1200" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "1600x1200" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "1600x1200" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "1792x1344" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "896x672" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using default mode "1792x1344" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "896x672" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using default mode "1856x1392" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "928x696" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using default mode "1856x1392" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "928x696" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using default mode "1920x1440" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "960x720" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using default mode "1920x1440" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "960x720" (bad mode clock/interlace/doublescan)
> (II) ATI(0): Not using default mode "1400x1050" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "1400x1050" (insufficient memory for mode)
> (II) ATI(0): Not using default mode "700x525" (hsync out of range)
> (II) ATI(0): Not using default mode "1600x1024" (insufficient memory for mode)
> (II) ATI(0): Not using mode "800x600" (no mode of this name)
> (II) ATI(0): Not using mode "640x480" (no mode of this name)
> (--) ATI(0): Virtual size is 1152x768 (pitch 1152)
> (**) ATI(0): Mode "1152x768": 78.7 MHz, 54.7 kHz, 68.4 Hz
> (II) ATI(0): Modeline "1152x768"   78.74  1152 1173 1269 1440  768 769 772 800 +vsync
> (**) ATI(0): Mode "1024x768": 78.5 MHz, 59.9 kHz, 74.8 Hz
> (II) ATI(0): Modeline "1024x768"   78.53  1024 1049 1145 1312  768 769 772 800 
>+hsync +vsync
> (**) ATI(0): Mode "1024x768": 65.0 MHz, 48.4 kHz, 60.0 Hz
> (II) ATI(0): Modeline "1024x768"   65.00  1024 1032 1176 1344  768 771 777 806 
>-hsync -vsync
> (**) ATI(0): Mode "1024x768": 65.0 MHz, 48.4 kHz, 60.0 Hz
> (II) ATI(0): Modeline "1024x768"   65.00  1024 1048 1184 1344  768 771 777 806 
>-hsync -vsync
> (**) ATI(0): Mode "832x624": 57.0 MHz, 49.5 kHz, 74.2 Hz
> (II) ATI(0): Modeline "832x624"   57.00  832 876 940 1152  624 625 628 667 -hsync 
>-vsync
> (**) ATI(0): Mode "1024x480": 65.0 MHz, 48.4 kHz, 85.9 Hz
> (II) ATI(0): Modeline "1024x480"   65.00  1024 1032 1176 1344  480 488 494 563 
>-hsync -vsync
> (**) ATI(0): Mode "768x576": 50.0 MHz, 50.0 kHz, 79.4 Hz
> (II) ATI(0): Modeline "768x576"   50.00  768 832 846 1000  576 590 595 630
> (**) ATI(0): Default mode "700x525": 61.0 MHz, 64.9 kHz, 60.0 Hz (D)
> (II) ATI(0): Modeline "700x525"   61.00  700 744 820 940  525 526 532 541 doublescan 
>+hsync +vsync
> (**) ATI(0): Default mode "640x512": 54.0 MHz, 64.0 kHz, 60.0 Hz (D)
> (II) ATI(0): Modeline "640x512"   54.00  640 664 720 844  512 512 514 533 doublescan 
>+hsync +vsync
> (**) ATI(0): Default mode "720x400": 35.5 MHz, 37.9 kHz, 85.0 Hz
> (II) ATI(0): Modeline "720x400"   35.50  720 756 828 936  400 401 404 446 -hsync 
>+vsync
> (**) ATI(0): Default mode "640x400": 31.5 MHz, 37.9 kHz, 85.1 Hz
> (II) ATI(0): Modeline "640x400"   31.50  640 672 736 832  400 401 404 445 -hsync 
>+vsync
> (**) ATI(0): Default mode "640x350": 31.5 MHz, 37.9 kHz, 85.1 Hz
> (II) ATI(0): Modeline "640x350"   31.50  640 672 736 832  350 382 385 445 +hsync 
>-vsync
> (**) ATI(0): Default mode "512x384": 39.4 MHz, 60.1 kHz, 75.1 Hz (D)
> (II) ATI(0): Modeline "512x384"   39.40  512 520 568 656  384 384 386 400 doublescan 
>+hsync +vsync
> (**) ATI(0): Default mode "512x384": 37.5 MHz, 56.5 kHz, 70.1 Hz (D)
> (II) ATI(0): Modeline "512x384"   37.50  512 524 592 664  384 385 388 403 doublescan 
>-hsync -vsync
> (**) ATI(0): Default mode "512x384": 32.5 MHz, 48.4 kHz, 60.0 Hz (D)
> (II) ATI(0): Modeline "512x384"   32.50  512 524 592 672  384 385 388 403 doublescan 
>-hsync -vsync
> (**) ATI(0): Default mode "512x384": 22.4 MHz, 35.5 kHz, 87.1 Hz (D)
> (II) ATI(0): Modeline "512x384"   22.45  512 516 604 632  384 384 388 409 interlace 
>doublescan +hsync +vsync
> (**) ATI(0): Default mode "416x312": 28.6 MHz, 49.7 kHz, 74.7 Hz (D)
> (II) ATI(0): Modeline "416x312"   28.64  416 432 464 576  312 312 314 333 doublescan 
>-hsync -vsync
> (**) ATI(0): Default mode "400x300": 28.1 MHz, 53.7 kHz, 85.3 Hz (D)
> (II) ATI(0): Modeline "400x300"   28.15  400 416 448 524  300 300 302 315 doublescan 
>+hsync +vsync
> (**) ATI(0): Default mode "400x300": 24.8 MHz, 46.9 kHz, 75.1 Hz (D)
> (II) ATI(0): Modeline "400x300"   24.75  400 408 448 528  300 300 302 312 doublescan 
>+hsync +vsync
> (**) ATI(0): Default mode "400x300": 25.0 MHz, 48.1 kHz, 72.2 Hz (D)
> (II) ATI(0): Modeline "400x300"   25.00  400 428 488 520  300 318 321 333 doublescan 
>+hsync +vsync
> (**) ATI(0): Default mode "400x300": 20.0 MHz, 37.9 kHz, 60.3 Hz (D)
> (II) ATI(0): Modeline "400x300"   20.00  400 420 484 528  300 300 302 314 doublescan 
>+hsync +vsync
> (**) ATI(0): Default mode "400x300": 18.0 MHz, 35.2 kHz, 56.3 Hz (D)
> (II) ATI(0): Modeline "400x300"   18.00  400 412 448 512  300 300 301 312 doublescan 
>+hsync +vsync
> (**) ATI(0): Default mode "320x240": 18.0 MHz, 43.3 kHz, 85.2 Hz (D)
> (II) ATI(0): Modeline "320x240"   18.00  320 348 376 416  240 240 242 254 doublescan 
>-hsync -vsync
> (**) ATI(0): Default mode "320x240": 15.8 MHz, 37.5 kHz, 75.0 Hz (D)
> (II) ATI(0): Modeline "320x240"   15.75  320 328 360 420  240 240 242 250 doublescan 
>-hsync -vsync
> (**) ATI(0): Default mode "320x240": 15.8 MHz, 37.9 kHz, 72.8 Hz (D)
> (II) ATI(0): Modeline "320x240"   15.75  320 332 352 416  240 244 245 260 doublescan 
>-hsync -vsync
> (**) ATI(0): Default mode "320x240": 12.6 MHz, 31.5 kHz, 60.1 Hz (D)
> (II) ATI(0): Modeline "320x240"   12.60  320 328 376 400  240 245 246 262 doublescan 
>-hsync -vsync
> (**) ATI(0): Default mode "360x200": 17.8 MHz, 37.9 kHz, 85.0 Hz (D)
> (II) ATI(0): Modeline "360x200"   17.75  360 378 414 468  200 200 202 223 doublescan 
>-hsync +vsync
> (**) ATI(0): Default mode "320x200": 15.8 MHz, 37.9 kHz, 85.3 Hz (D)
> (II) ATI(0): Modeline "320x200"   15.75  320 336 368 416  200 200 202 222 doublescan 
>-hsync +vsync
> (**) ATI(0): Default mode "320x175": 15.8 MHz, 37.9 kHz, 85.3 Hz (D)
> (II) ATI(0): Modeline "320x175"   15.75  320 336 368 416  175 191 192 222 doublescan 
>+hsync -vsync
> (==) ATI(0): DPI set to (75, 75)
> (II) Loading sub module "xaa"
> (II) LoadModule: "xaa"
> (II) Loading /usr/X11R6/lib/modules/libxaa.a
> (II) Module xaa: vendor="The XFree86 Project"
>       compiled for 4.2.0, module version = 1.0.0
>       ABI class: XFree86 Video Driver, version 0.5
> (II) Loading sub module "ramdac"
> (II) LoadModule: "ramdac"
> (II) Loading /usr/X11R6/lib/modules/libramdac.a
> (II) Module ramdac: vendor="The XFree86 Project"
>       compiled for 4.2.0, module version = 0.1.0
>       ABI class: XFree86 Video Driver, version 0.5
227,233d345
< (**) FBDEV(0): Using "Shadow Framebuffer"
< (II) Loading sub module "shadow"
< (II) LoadModule: "shadow"
< (II) Loading /usr/X11R6/lib/modules/libshadow.a
< (II) Module shadow: vendor="The XFree86 Project"
<       compiled for 4.2.0, module version = 1.0.0
<       ABI class: XFree86 ANSI C Emulation, version 0.1
236c348
<       [0] 0   0x81000000 - 0x81ffffff (0x1000000) MX[B]
---
>       [0] 0   0x81000000 - 0x81ffffff (0x1000000) MS[B]
242,251c354,371
<       [6] 0   0x000a0000 - 0x000affff (0x10000) MS[B]
<       [7] 0   0x000b0000 - 0x000b7fff (0x8000) MS[B]
<       [8] 0   0x000b8000 - 0x000bffff (0x8000) MS[B]
<       [9] 0   0x00000400 - 0x000004ff (0x100) IX[B]
<       [10] -1 0x0000ffff - 0x0000ffff (0x1) IX[B]
<       [11] -1 0x00000000 - 0x00000000 (0x1) IX[B]
<       [12] -1 0x00000400 - 0x000004ff (0x100) IX[B](B)
<       [13] 0  0x000003b0 - 0x000003bb (0xc) IS[B]
<       [14] 0  0x000003c0 - 0x000003df (0x20) IS[B]
< (==) FBDEV(0): Backing store disabled
---
>       [6] 0   0x00000400 - 0x000004ff (0x100) IS[B]
>       [7] -1  0x0000ffff - 0x0000ffff (0x1) IX[B]
>       [8] -1  0x00000000 - 0x00000000 (0x1) IX[B]
>       [9] -1  0x00000400 - 0x000004ff (0x100) IX[B](B)
> (II) ATI(0): Largest offscreen areas (with overlaps):
> (II) ATI(0):  1152 x 141 rectangle at 0,768
> (II) ATI(0):  896 x 142 rectangle at 0,768
> (II) ATI(0): Using XFree86 Acceleration Architecture (XAA)
>       Screen to screen bit blits
>       Solid filled rectangles
>       8x8 mono pattern filled rectangles
>       Indirect CPU to Screen color expansion
>       Solid Lines
>       Offscreen Pixmaps
>       Setting up tile and stipple cache:
>               9 128x128 slots
> (==) ATI(0): Backing store disabled
> (==) ATI(0): Silken mouse enabled
253,254c373,374
< (**) FBDEV(0): DPMS enabled
< (II) Setting vga for screen 0.
---
> (**) ATI(0): DPMS enabled
> (II) ATI(0): ecp_div is 0
275,277c395
< GetModeLine - scrn: 0 clock: 78525
< GetModeLine - hdsp: 1024 hbeg: 1049 hend: 1145 httl: 1312
<               vdsp: 768 vbeg: 769 vend: 772 vttl: 800 flags: 5
---
> (II) ATI(0): Shutting down Xvideo subsystems

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