2.5.70 - ATI DRM broken

ATI 128 DRM broke between 2.5.69 and 2.5.70. I've manually played with the diff in 'drivers/char/drm/*', but never got .70 to work. The problem may not even be in drm/.

Linus' message said he included 'DRM from CVS', so I imagine it'll be fixed soon enough, but probably someone should make sure .71 has another CVS update of DRI.

FWIW, a full description of the problem follows.

Everything seems to works well even in FB console mode (x86 processor). However, if I try to startx, then it appears that X loads, and I can see and move the cursor (not the regular X cursor, but my window manager's). The background is never updated by X, so I just see a black screen with a cursor. It appears that X doesn't respond to mouse clicks, as wm menus don't show up.

X doesn't seem to notice a problem as my XFree86.log doesn't show anything abnormal. In the console, with gpm, the mouse works fine.

Once I startx, I cannot switch back to a console, nor can I exit, even with Ctrl-Alt-Bkspace. I have not disabled that key sequence.

Running X, the background still doesn't show up, but I am able to exit with C-A-BS. The X log shows nothing. HOWEVER!, if I rerun X, I don't get a cursor; nor can I C-A-BS.

Sometimes it seems X works once or twice, but it never works a third time. Seems to be a problem switching between X/console,console/X.

Recompiling without DRM (and running with vesafb) fixes the problem.

More information is available, just tell me what to look for.

Justin Pryzby

PS

Dell Inspiron 4k laptop, relevant lspci follows:

...
00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03) (prog-if 00 [Normal decode])
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-
Latency: 32
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32 I/O behind bridge: 0000e000-0000efff
Memory behind bridge: fd000000-feffffff
Prefetchable memory behind bridge: f8000000-fbffffff
BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B+
...
01:00.0 VGA compatible controller: ATI Technologies Inc Rage Mobility M3 AGP 2x (rev 02) (prog-if 00 [VGA])
Subsystem: Dell Computer Corporation: Unknown device 00b0
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-

        Latency: 32 (2000ns min), cache line size 08
        Interrupt: pin A routed to IRQ 11
        Region 0: Memory at f8000000 (32-bit, prefetchable) [size=64M]
        Region 1: I/O ports at ec00 [size=256]
        Region 2: Memory at fdffc000 (32-bit, non-prefetchable)

[size=16K]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: [50] AGP version 2.0
Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64-
HTrans- 64bit- FW- AGP3- Rate=x1,x2

                Command: RQ=1 ArqSz=0 Cal=0 SBA+ AGP- GART64- 64bit- FW-

Rate=<none>
Capabilities: [5c] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

Relevant dmesg output follows:

...
vesafb: framebuffer at 0xf8000000, mapped to 0xc8814000, size 8192k
vesafb: mode is 1024x768x24, linelength=3072, pages=2
vesafb: protected mode interface info at c000:6294
vesafb: scrolling: redraw
EDID checksum failed, aborting
EDID checksum failed, aborting
vesafb: directcolor: size=0:8:8:8, shift=0:16:8:0
fb0: VESA VGA frame buffer device
Console: switching to colour frame buffer device 128x48
...
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected Intel 440BX chipset
agpgart: Maximum main memory to use for agp memory: 94M
agpgart: AGP aperture is 64M @ 0xf4000000
[drm] Initialized r128 2.3.0 20021029 on minor 0
...