Re: HELP: Problem with radeonfb setting wrong resolution

["Antonino A. Daplas" <adaplas@gmail.com>]

Timothy Miller wrote:
> On 2/14/06, Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
>> On Tue, 2006-02-14 at 15:33 -0500, Timothy Miller wrote:
>>> I humbly apologize if it is inappropriate for me to post this question
>>> here.  I'm not subscribed, and I haven't been in a while.  I've
>>> googled around for answers to this, but I don't find anything that
>>> directly addresses the issue I'm seeing.  Please cc me.
>>>
>>> I'm installing a new Gentoo box, and I have configured the
>>> 2.6.12-gentoo-r6 kernel.
>>>
>>> Here's what I have enabled:
>>>
>>> + Support for framebuffer devices
>>> + ATI Radeon display support
>>> + DDC/I2C for ATI Radeon support
>>> + Lots of debug output from Radeon drive
>>> + VGA text console
>>> + Framebuffer Console support
>>>
>>> In the grub.conf file, I have this at the end of the kernel line:
>>>
>>> video=radeonfb:1024x768
>>>
>>> When booting up, radeonfb finds the device (A Radeon 7000 PCI card),
>>> the monitor flickers for a second, and then what I get is a 640x480
>>> screen, but the kernel seems to think it's 1024x768, because text goes
>>> off the screen.
>>>
>>> I've googled for this, but what I find is old stuff where people are
>>> complaining about seeing a higher resolution than the one they asked
>>> for.  I'm getting a LOWER resolution.
>>>
>>> I can't figure out what I'm doing wrong, but there are no kernel error
>>> messages that tell me anything has gone wrong.
>>>
>>> Can anyone help me figure out what I'm doing wrong here?  BTW, the
>>> monitor is a 19" NEC.  No chance that the monitor reports via DDC that
>>> it can't do 1024x768.
>> Can you send me the debug output ? (dmesg)
>>
> 
> I just installed 2.6.15-gentoo-5, so I have a much more recent kernel.
>  This strange behavior still happens.  I forgot to mention that I'm
> using this on an P4, and the kernel is compiled 64-bit.
> 
> I sent Ben a copy of the whole dmesg output.  Here's the portion that
> everyone else might be interested in:
> 
> radeonfb_pci_register BEGIN
> ACPI: PCI Interrupt 0000:02:05.0[A] -> GSI 21 (level, low) -> IRQ 193
> radeonfb (0000:02:05.0): Found 65536k of DDR 64 bits wide videoram
> radeonfb (0000:02:05.0): mapped 16384k videoram
> radeonfb: Found Intel x86 BIOS ROM Image
> radeonfb: Retreived PLL infos from BIOS
> radeonfb: Reference=27.00 MHz (RefDiv=60) Memory=150.00 Mhz, System=150.00 MHz
> radeonfb: PLL min 12000 max 35000
> 1 chips in connector info
>  - chip 1 has 2 connectors
>   * connector 0 of type 2 (CRT) : 2300
>   * connector 1 of type 3 (DVI-I) : 3201
> Starting monitor auto detection...
> radeonfb: I2C (port 1) ... not found
> radeonfb: I2C (port 2) ... not found
> radeonfb: I2C (port 3) ... found TMDS panel
> radeonfb: I2C (port 4) ... not found
> radeonfb: I2C (port 2) ... not found
> radeonfb: I2C (port 4) ... not found
> radeonfb: I2C (port 3) ... found TMDS panel
> radeonfb: Monitor 1 type DFP found
> radeonfb: EDID probed
> radeonfb: Monitor 2 type no found
> Parsing EDID data for panel info
> Guessing panel info...
> radeonfb: Assuming panel size 8x1
                                ^^^
 
Looks like an EDID problem.  Can you change #undef DEBUG to #define DEBUG
in drivers/video/fbmon.c and post your dmesg again?

Tony