[Bug 22599] Re: enabling DMA on CD-ROMs causes hal failures

[Tiago Rodrigues]

I'm experiencing a similar problem but i dont use suspend. What happens
is that after some time of being running, my laptop just freezes for
about 10 seconds, then gets back to normal, then 1 or 2 minutes after it
freezes completely. The first time it happened i tought it was an
hardware problem but when i looked at syslog, i found those "hdc
interrupt errors" (my combo drive).

If i disable hal, everything's ok. If i use it, well, it happens.
As i read here, i tried to remove ohci1394, but with no luck, it happened again. Now i tried disabling DMA on my combo drive and i'm waiting for results.

I'm running Dapper Drake as well, and this already happened in Breezy,
but at the time i found a bug report somewhere else which talked about
kernel bugs that would probably be solved on 2.6.15 so i waited. Looks
like those bugs aren't gone.

My laptop is an Airis DIamond 630 (i know...weird), a Pentium IV 2.80ghz on an Intel based motherboard. Here's an lspci:
0000:00:00.0 Host bridge: Intel Corporation 82845G/GL[Brookdale-G]/GE/PE DRAM Controller/Host-Hub Interface (rev 03)
0000:00:01.0 PCI bridge: Intel Corporation 82845G/GL[Brookdale-G]/GE/PE Host-to-AGP Bridge (rev 03)
0000:00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 02)
0000:00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 02)
0000:00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 02)
0000:00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 02)
0000:00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 82)
0000:00:1f.0 ISA bridge: Intel Corporation 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge (rev 02)
0000:00:1f.1 IDE interface: Intel Corporation 82801DB (ICH4) IDE Controller (rev 02)
0000:00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 02)
0000:00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 02)
0000:00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 02)
0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon R250 Lf [FireGL 9000] (rev 01)
0000:02:03.0 CardBus bridge: O2 Micro, Inc. OZ601/6912/711E0 CardBus/SmartCardBus Controller
0000:02:0a.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80)
0000:02:0c.0 Ethernet controller: National Semiconductor Corporation DP83815 (MacPhyter) Ethernet Controller

The combo drive a SONY CD-RW/DVD-ROM CRX830E.

Here's the "interrupt errors" from syslog:
Jun  5 08:10:46 localhost kernel: [4344496.951000] hdc: irq timeout: status=0xd0 { Busy }
Jun  5 08:10:46 localhost kernel: [4344496.951000] ide: failed opcode was: unknown
Jun  5 08:10:46 localhost kernel: [4344496.951000] hdc: DMA disabled
Jun  5 08:11:16 localhost kernel: [4344526.951000] hdc: ATAPI reset timed-out, status=0x80
Jun  5 08:11:51 localhost kernel: [4344556.951000] ide1: reset timed-out, status=0x80
Jun  5 08:11:51 localhost kernel: [4344561.952000] hdc: status timeout: status=0x80 { Busy }
Jun  5 08:11:51 localhost kernel: [4344561.952000] ide: failed opcode was: unknown
Jun  5 08:11:51 localhost kernel: [4344561.952000] hdc: drive not ready for command
Jun  5 08:12:21 localhost kernel: [4344591.956000] hdc: ATAPI reset timed-out, status=0x80
Jun  5 08:12:53 localhost kernel: [4344621.956000] ide1: reset timed-out, status=0x80

I'll try updating to 2.6.16 if disabling dma does nothing for me.

-- 
enabling DMA on CD-ROMs causes hal failures
https://launchpad.net/bugs/22599