J.A. Magallón wrote: > Hi all... > > I recently put my hands on a system with an ASUS P5N64 WS Pro mobo: > > http://www.asus.com/products.aspx?l1=3&l2=11&l3=653&l4=0&model=2182&modelmenu=1 > > It has a nForce 790i Ultra SLI chipset, the part for the SATA controller > is MCP55. > > The problem is that linux seems to fail to read the hard drive on boot. > I will explain. > > I have tried to install both CentOS 5.2 and Mandriva 2009.0. > For CentOS (has a 2.6.18 kernel), the install seems ok, but when I reboot > into the just intalled system the kernel hangs just after printing > the name of the initrd. Mandriva (2.6.27-rc8) just hungs half the install process. > Live versions of both hang on boot saying they can not find the root > device. > > I have found some messages in the net about the MCP55 in that board not > being completeley suppported as AHCI in sata_nv, and that some other > boards work puttin the SATA controller in 'compatible' mode (with > loss of performance). > But I can't find any setting in the P5N64 to put SATA in Compat mode. > > Can I do this via some kernel parameters ? > Somabody has this board working ? Do current kernels have better support > for this chipset ? All three flavors of sata_nv's - generic (yours), nf2/3 and ck804 - had various detection problems from 2.6.27-rc1. The problem was that their hardresets all worked differently. 2.6.27-rc1 started to favor hardresets over softresets and exposed this problem. While trying to fix the problem, because all three flavors unexpectedly showed different hardreset behaviors, there were some mistakes. A proper fix is included in upstream and is queued for -stable. Sorry about the mess. Thanks. -- tejun -- 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
