Linux 2.6.3-rc4 Massive strange corruption with new radeonfb

From: Charles Johnston (cjohnston_at_networld.com)
Date: 02/17/04

  • Next message: viro_at_parcelfarce.linux.theplanet.co.uk: "Re: UTF-8 and case-insensitivity" 
    Date:	Tue, 17 Feb 2004 13:08:50 -0700
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>

    Upon bootup, radeonfb is obviously not initializing the hardware
    correctly. Massive amounts of random-looking garbage, plus a weird
    effect I've never seen before, like someone pouring milk _up_ the
    screen. (Yeah, it's the best I could come up with)

    It's a Dell Inspiron 8600 with Mobile Radeon 9600 and 1920x1200 LCD.

    Here's the relevant parts from dmesg:

    radeonfb_pci_register BEGIN
    radeonfb: probed SDR SGRAM 131072k videoram
    radeonfb: mapped 16384k videoram
    radeonfb: Found Intel x86 BIOS ROM Image
    radeonfb: Retreived PLL infos from BIOS
    radeonfb: Reference=27.00 MHz (RefDiv=6) Memory=337.00 Mhz,
    System=243.00 MHz
    1 chips in connector info
      - chip 1 has 2 connectors
       * connector 0 of type 2 (CRT) : 2300
       * connector 1 of type 4 (DVI-D) : 4210
    Starting monitor auto detection...
    radeonfb: I2C (port 1) ... not found
    radeonfb: I2C (port 2) ... not found
    radeonfb: I2C (port 3) ... not found
    radeonfb: I2C (port 4) ... not found
    radeonfb: Reversed DACs detected
    radeonfb: Reversed TMDS detected
    radeonfb: I2C (port 2) ... not found
    radeonfb: I2C (port 4) ... not found
    Non-DDC laptop panel detected
    radeonfb: I2C (port 3) ... not found
    radeonfb: I2C (port 4) ... not found
    radeonfb: Monitor 1 type LCD found
    radeonfb: Monitor 2 type no found
    radeonfb: panel ID string:
    radeonfb: detected LVDS panel size from BIOS: 0x0
    BIOS provided panel power delay: 0
    Scanning BIOS table ...
    Didn't find panel in BIOS table !
    Guessing panel info...
    radeonfb: Assuming panel size 8x1
    radeonfb: Power Management enabled for Mobility chipsets
    radeonfb: ATI Radeon NP SDR SGRAM 128 MB
    radeonfb_pci_register END

    hStart = 664, hEnd = 760, hTotal = 800
    vStart = 409, vEnd = 411, vTotal = 450
    h_total_disp = 0x4f0063 hsync_strt_wid = 0x8c0292
    v_total_disp = 0x18f01c1 vsync_strt_wid = 0x820198
    pixclock = 39729
    freq = 2517
    post div = 0x3
    fb_div = 0x2d
    ppll_div_3 = 0x3002d
    lvds_gen_cntl: 003cffa5

    Obviously, it isn't detecting the screen size properly. I even tried
    hard-coding the resolution in the detection code, to no avail.
    Any suggestions?

    Thanks.

    Charles
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  • Next message: viro_at_parcelfarce.linux.theplanet.co.uk: "Re: UTF-8 and case-insensitivity"

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