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SubjectRe: [radeonfb] black screen/wrong display size detected
Benjamin Herrenschmidt <benh@kernel.crashing.org> [040220 10:00]:
>On Thu, 2004-02-19 at 03:42, Andreas Happe wrote:
>Is backlight off or is it enabled and just screen content is
>black ?

The screen content is black, I can change the backlight intensitivity
with my keyboard.

>> wrong size detected, display is 1680x1050.
>
>That's interesting.
>
>Enable radeon debug options and send me the output.

| PCI: if you experience problems, try using option 'pci=noacpi' or even 'acpi=off'
| radeonfb_pci_register BEGIN
| radeonfb: probed DDR SGRAM 65536k videoram
| radeonfb: mapped 16384k videoram
| radeonfb: Found Intel x86 BIOS ROM Image
| radeonfb: Retreived PLL infos from BIOS
| radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=250.00 Mhz, System=220.00 MHz
| i2c_adapter i2c-0: registered as adapter #0
| i2c_adapter i2c-1: registered as adapter #1
| i2c_adapter i2c-2: registered as adapter #2
| i2c_adapter i2c-3: registered as adapter #3
| 1 chips in connector info
| - chip 1 has 1 connectors
| * connector 0 of type 2 (CRT) : 2300
| Starting monitor auto detection...
| radeonfb: I2C (port 1) ... not found
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| radeonfb: I2C (port 2) ... not found
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| radeonfb: I2C (port 3) ... not found
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| radeonfb: I2C (port 4) ... not found
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| radeonfb: I2C (port 2) ... not found
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| radeonfb: I2C (port 4) ... not found
| Non-DDC laptop panel detected
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| radeonfb: I2C (port 3) ... not found
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| radeonfb: I2C (port 4) ... not found
| radeonfb: Monitor 1 type LCD found
| radeonfb: Monitor 2 type no found
| radeonfb: panel ID string: Samsung LTN150P1-L02
| radeonfb: detected LVDS panel size from BIOS: 1400x1050
| BIOS provided panel power delay: 1000
| radeondb: BIOS provided dividers will be used
| ref_divider = c
| post_divider = 1
| fbk_divider = 60
| Scanning BIOS table ...
| 18 x 18665
| 8236 x 21569
| 12598 x 8241
| 0 x 25600
| 19558 x 0
| 65535 x 65535
| 0 x 866
| 65376 x 65535
| 8 x 2048
| 63743 x 3841
| 255 x 0
| 0 x 0
| 65535 x 115
| 32768 x 5
| 4608 x 4608
| 2179 x 2179
| 64770 x 33280
| 3 x 23046

..interessting values.

| Didn't find panel in BIOS table !
| Guessing panel info...
| radeonfb: Assuming panel size 1400x1050
| radeonfb: Power Management enabled for Mobility chipsets
| radeonfb: ATI Radeon Lf DDR SGRAM 64 MB
| radeonfb_pci_register END

>Also try
>commenting out the call to radeon_map_ROM(rinfo, pdev);
>in drivers/video/aty/radeon_base.c and send me that output
>as well (send me both, even if commenting out the call "fixes"
>it).

yes, it fixed the problem for me (I get an working framebuffer, computer
still crashes (sysrq still works) on startup (via xdm)).

kernel output:
| radeonfb_pci_register BEGIN
| radeonfb: probed DDR SGRAM 65536k videoram
| radeonfb: mapped 16384k videoram
| radeonfb: Retreived PLL infos from BIOS
| radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=250.00 Mhz, System=220.00 MHz
| i2c_adapter i2c-0: registered as adapter #0
| i2c_adapter i2c-1: registered as adapter #1
| i2c_adapter i2c-2: registered as adapter #2
| i2c_adapter i2c-3: registered as adapter #3
| 1 chips in connector info
| - chip 1 has 1 connectors
| * connector 0 of type 2 (CRT) : 2300
| Starting monitor auto detection...
| radeonfb: I2C (port 1) ... not found
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| radeonfb: I2C (port 2) ... not found
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| radeonfb: I2C (port 3) ... not found
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| radeonfb: I2C (port 4) ... not found
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| i2c_adapter i2c-1: master_xfer: with 2 msgs.
| radeonfb: I2C (port 2) ... not found
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| radeonfb: I2C (port 4) ... not found
| Non-DDC laptop panel detected
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| i2c_adapter i2c-2: master_xfer: with 2 msgs.
| radeonfb: I2C (port 3) ... not found
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| i2c_adapter i2c-3: master_xfer: with 2 msgs.
| radeonfb: I2C (port 4) ... not found
| radeonfb: Monitor 1 type LCD found
| radeonfb: Monitor 2 type no found
| radeonfb: panel ID string: HTC
| radeonfb: detected LVDS panel size from BIOS: 1680x1050
| BIOS provided panel power delay: 1000
| radeondb: BIOS provided dividers will be used
| ref_divider = 6
| post_divider = 1
| fbk_divider = 35
| Scanning BIOS table ...
| 320 x 350
| 320 x 400
| 320 x 400
| 320 x 480
| 400 x 600
| 512 x 384
| 640 x 350
| 640 x 400
| 640 x 475
| 640 x 480
| 720 x 480
| 720 x 576
| 800 x 600
| 848 x 480
| 1024 x 768
| 1280 x 1024
| 1152 x 864
| 1280 x 800
| 1680 x 1050
| Found panel in BIOS table:
| hblank: 160
| hOver_plus: 48
| hSync_width: 32
| vblank: 30
| vOver_plus: 2
| vSync_width: 6
| clock: 11912
| Setting up default mode based on panel info
| radeonfb: Power Management enabled for Mobility chipsets
| radeonfb: ATI Radeon Lf DDR SGRAM 64 MB
| radeonfb_pci_register END

--Andreas
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