Bug#268352: 2.6.* radeonfb regression

["Francesco P. Lovergine" <frankie@debian.org>]

Package: kernel
Severity: normal

2.4 series radeonfb (1.8-benh) works perfectly (also modular).
2.6 series new radeonfb never worked (since 2.6.0 at least), it does not sync here (laptop XSVGA).
After loading, fbset reports 1400x1050-60, as for the 2.4 version, but screen
is blank and stay in normal text mode 80x25. I need to switch on and back to X in order to
see screen content again. That's for loading it modular of course, I have to do yet test
for static version.

0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M6 LY

0000:01:00.0 0300: 1002:4c59
        Subsystem: 0e11:b11b
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop+ ParErr- Stepping+ SERR+ FastB2B+
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Interrupt: pin A routed to IRQ 9
        Region 0: Memory at d8000000 (32-bit, prefetchable) [size=128M]
        Region 1: I/O ports at 2000 [size=256]
        Region 2: Memory at d0100000 (32-bit, non-prefetchable) [size=64K]
        Expansion ROM at <unassigned> [disabled] [size=128K]
        Capabilities: <available only to root>

In dmesg:

Aug 18 19:06:41 localhost kernel: radeonfb: Retreived PLL infos from BIOS
Aug 18 19:06:41 localhost kernel: radeonfb: Reference=27.00 MHz (RefDiv=60) Memory=166.00 Mhz, System=143.00 MHz
Aug 18 19:06:42 localhost kernel: radeonfb: Monitor 1 type LCD found
Aug 18 19:06:42 localhost kernel: radeonfb: EDID probed
Aug 18 19:06:42 localhost kernel: radeonfb: Monitor 2 type no found
Aug 18 19:06:42 localhost kernel: radeonfb: panel ID string: Samsung LTN150P1-L02
Aug 18 19:06:42 localhost kernel: radeonfb: detected LVDS panel size from BIOS: 1400x1050
Aug 18 19:06:42 localhost kernel: radeondb: BIOS provided dividers will be used
Aug 18 19:06:42 localhost kernel: radeonfb: Power Management enabled for Mobility chipsets
Aug 18 19:06:42 localhost kernel: radeonfb: ATI Radeon LY  DDR SGRAM 32 MB

This is with current 2.6.8 in debian, but that's true with _all_ other previous versions (2.6.0+).

fbset return right mode, as set in /etc/fb.modes too:

mode "1400x1050-60"
    # D: 108.003 MHz, H: 63.983 kHz, V: 60.191 Hz
    geometry 1400 1050 1400 1050 8
    timings 9259 136 40 10 0 112 3
    rgba 6/0,6/0,6/0,0/0
    hsync high
    vsync high
    accel true
endmode

I tried to fbset explicitly the mode after module loading too, but without results.
I'll return results with static compiled in module when possible. 


-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.4.27-1-686
Locale: LANG=it_IT@euro, LC_CTYPE=it_IT@euro


-- 
Francesco P. Lovergine