Hi, On Tue, Jun 17, 2008 at 06:14:40PM +0900, Tejun Heo wrote: > Alan Cox wrote: > > On Tue, 17 Jun 2008 12:37:24 +0900 > > Tejun Heo <tj@xxxxxxxxxx> wrote: > > > >> LG blueray drive GGW-H10N can't do ATAPI PIO. Implement > >> ATAPI_HORKAGE_NOPIO and apply it to the drive. If the horkage is > >> active, atapi_check_dma() always returns 0 and warns if the controller > >> needs ATAPI PIO for certain commands. > > > > This all seems wildly improbable as a drive with such a bug would not > > appear to be going to work in Windows. I'd like to know more and see more > > than one bug report for that drive before it goes in > > > > You might even be looking at a single drive with a one off wiring flaw or > > chip fault at this point. > > I thought it was improbable too but it's a brand new relatively cheap > blueray writer so it's quite possible that they screwed up the firmware > on this one as are often the cases for first gen devices. > > Relatively cheap it may be, it's still around $300, so I don't think > I'll get one for testing. The high price could probably explain low > error report rate. > > Luke, what happens if you use the drive on windows? Does it just work? Sorry, I've a Windows-free household and the machines a self-build so doesn't come with a license. I'll see if I can find a solution but it may take a little while. It could be a drive fault or it could be a funky issue with the drive/controller combination. nvidia claimed they weren't aware of any problems with the device on the nForce chipset (LG didn't bother responding to my email). It is LG's first Blu-Ray/HD-DVD combo drive and I did buy it shortly after UK release so it could be an early build. I've run it with firmwares 1.01 to 1.04. Originally the drive was bought for a different PC with a Silicon Image 3114 controller. The drive worked fine with this (sata_sil). Then I changed to the nForce motherboard and it never worked with the mobo (AHCI driver/AHCI mode in BIOS). However it does work on a Silicon Image 3512 PCI card (sata_sil again) in the same machine, and a Lite-On DVD rewriter works on the nForce SATA just fine (ahci). To muddy the waters further the LG drive on the nForce motherboard works fine for reading. It'll even write a Blu-Ray disc happily*. It just won't accept commands like "wodim -toc", "wodim <filename>", "growisofs -Z" without Tejun's patch. Luke * I use the term loosely, it's a bit sulky about BD-R media. -- ``Doing linear scans over an associative array is like trying to club someone to death with a loaded Uzi.'' -- Larry Wall -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
