This bug is alive and well. There are many very similar reports on ubuntuforums.org and linuxquestions.com
Based on what I read, which confirms my experience it is a regression which occurred somewhere in kernel 2.6.26 series Here are some more details: https://bugzilla.redhat.com/show_bug.cgi?id=470623 The most important points are (thanks to excellent detective work by D Wagner): * the bug did NOT exist in 2.6.26.5-45.fc9.x86_64: stable (without nvidia) * The bug appeared in Fedora-core 9 with the upgrade to kernel-2.6.26.6-79.fc9.x86_64 * The kernel causes very frequent resets of the disk with no apparent functionality loss * The loss is some obvious efficiency loss due to the reset overhead * Forcing SATA speed down to 1.5G and rebuilding initrd (with mkinitrd) "solves" the problem at the expense of forcing the slower speed * 2.6.27.7 is stable again * 2.6.28 is broken again * The problem happens with disks of various manufacturers: All of Samsung, Western-Digital, and Seagate SATA disks have shown to have the frequent reset problem For reference, here are the errors I see frequently: Aug 1 23:15:08 ze kernel: [79569.248949] ata3.01: exception Emask 0x40 SAct 0x0 SErr 0x80800 action 0x0 Aug 1 23:15:08 ze kernel: [79569.248954] ata3.01: SError: { HostInt 10B8B } Aug 1 23:15:08 ze kernel: [79569.248960] ata3.01: cmd a0/00:00:00:00:00/00:00:00:00:00/b0 tag 0 Aug 1 23:15:08 ze kernel: [79569.248961] cdb 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Aug 1 23:15:08 ze kernel: [79569.248963] res 51/20:03:00:00:00/00:00:00:00:00/b0 Emask 0x40 (internal error) Aug 1 23:15:08 ze kernel: [79569.248965] ata3.01: status: { DRDY ERR } Aug 1 23:15:08 ze kernel: [79569.248973] ata3.00: hard resetting link Aug 1 23:15:08 ze kernel: [79569.568012] ata3.01: hard resetting link Aug 1 23:15:08 ze kernel: [79570.044073] ata3.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Aug 1 23:15:08 ze kernel: [79570.044087] ata3.01: SATA link up 1.5 Gbps (SStatus 113 SControl 310) Aug 1 23:15:08 ze kernel: [79570.068600] ata3.00: configured for UDMA/133 Aug 1 23:15:08 ze kernel: [79570.084493] ata3.01: configured for PIO0 Aug 1 23:15:08 ze kernel: [79570.084796] ata3: EH complete Aug 1 23:15:08 ze kernel: [79570.085459] sd 2:0:0:0: [sda] 1953525168 512-byte hardware sectors: (1.00 TB/931 GiB) Aug 1 23:15:08 ze kernel: [79570.086065] sd 2:0:0:0: [sda] Write Protect is off Aug 1 23:15:08 ze kernel: [79570.086067] sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00 Aug 1 23:15:08 ze kernel: [79570.087333] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Aug 1 23:15:08 ze kernel: [79570.088623] sd 2:0:0:0: [sda] 1953525168 512-byte hardware sectors: (1.00 TB/931 GiB) Aug 1 23:15:08 ze kernel: [79570.089118] sd 2:0:0:0: [sda] Write Protect is off Aug 1 23:15:08 ze kernel: [79570.089120] sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00 Aug 1 23:15:08 ze kernel: [79570.089385] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA ** Bug watch added: Red Hat Bugzilla #470623 https://bugzilla.redhat.com/show_bug.cgi?id=470623 -- Sata is resetted too often: SATA link down (SStatus 0 SControl 0) https://bugs.launchpad.net/bugs/228581 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
