Re: radeonfb: strange blue lines after 'setterm -inversescreen on'

From: Hihn, Jason <[email protected]>
Date: Mon, Apr 05, 2004 at 01:34:16PM -0400
> Just a guess... I'm not in 2.6, but it looks like the math to do the
> inverse screen is only using 24 bits, not 32. What is it like in 24bpp?
> Visually:
> *** (inverse mask)
> aRGB = 00 00 00 FF
>  ^^^ (normal mask)
> So it looks like there may be some 24/32 bit shifting going awry when
> -inversescreen is set.
> 
This is a step in the right direction:

1600x1200-8@75: ok
1600x1200-16@75: blue screen
1600x1200-24@75: 'no mode found' in dmesg?
1600x1200-32@75: blue screen

apropos 24 bits:

Kernel command line: root=/dev/hda3 video=radeonfb:1600x1200-24@75 acpi=force

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=60) Memory=166.00 Mhz, System=166.00 MHz
radeonfb: No connector info table detected
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: I2C (port 2) ... not found
radeonfb: I2C (port 3) ... not found
radeonfb: I2C (port 4) ... not found
radeonfb: Monitor 1 type CRT found
radeonfb: ATI Radeon QD  DDR SGRAM 64 MB
radeonfb_pci_register END
Starting balanced_irq
ikconfig 0.7 with /proc/config*
Installing knfsd (copyright (C) 1996 [email protected]).
udf: registering filesystem
Limiting direct PCI/PCI transfers.
ACPI: Power Button (FF) [PWRF]
ACPI: Processor [CPU] (supports C1)
ACPI: Processor [CPU1] (supports C1)
ACPI: Thermal Zone [THRM] (28 C)
hStart = 664, hEnd = 760, hTotal = 800
vStart = 491, vEnd = 493, vTotal = 525
h_total_disp = 0x4f0063    hsync_strt_wid = 0x8c02a2
v_total_disp = 0x1df020c           vsync_strt_wid = 0x8201ea
pixclock = 39721
freq = 2517
post div = 0x3
fb_div = 0x1bf
ppll_div_3 = 0x301bf
lvds_gen_cntl: 00000000
Console: switching to colour frame buffer device 53x21

Well, b*gger. Did I mention I use the 12x22 font from sun?

Anyway, going to 8 bits color-depth solves my problem, but I'd rather
watch some photo's in at least 16-bit color depth. What part of the
driver is suspect?

Thanks,
Jurriaan

> If I boot linux-2.6.5, with a radeonfb framebuffer 1600x1200-32@75, I
> get white letters on a black background. Fine. If I issue the command
> setterm -inversescreen on, I get black letters on a white background.
> 
> So far so good.
> 
> Now if I press enter, I get a new line with black letters on a white
> background, but everything after the cursor is blue.
> 
> Switching consoles (alt-f2, alt-f1) removes the blue line.
> Issuing 'clear' gives an entire blue screen after the cursor (so a small
> part, the prompt, stays black-on-white).
> 
> This is with a radeon 9000 and with a radeon 7000, so it must be
> something in general. Incidentally, blue is also the color the overscan
> area gets.
> 
> This has been happening on all 2.6.x kernels going back months.
> 
-- 
Someone's stained
Someone's gained
Us or was it them?
	The men they couldn't hang - Rosettes
Debian (Unstable) GNU/Linux 2.6.5-rc3-mm3 2x6062 bogomips 0.52 0.19


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