Hi, (please let me know if this is the wrong list to ask this) I have a Crucial M4 512 GB SSD installed on my Thinkpad X220 (Ubuntu Precise). Overall this runs very nicely, but it takes 10+ seconds to resume from suspend, apparently because some issue with the hardrive. The only message I see while resuming is "COMRESET failed (errno=-16)". [52483.228615] ata1: link is slow to respond, please be patient (ready=0) [52487.870616] ata1: COMRESET failed (errno=-16) [52488.190222] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [52488.190752] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded [52488.190754] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out [52488.190755] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out [52488.191849] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded [52488.191855] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out [52488.191860] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out [52488.192406] ata1.00: configured for UDMA/100 [52488.206298] sd 0:0:0:0: [sda] Starting disk [52488.207334] Extended CMOS year: 2000 [52488.208335] PM: resume of devices complete after 10376.896 msecs [52488.208552] PM: resume devices took 10.376 seconds The only relevant post I've found was in the crucial support site: http://forums.crucial.com/t5/Solid-State-Drives-SSD/SOLVED-M4-CT512M4SSD1-7mm-512Gb-SSD-too-slow-when-laptop-wakes/td-p/102666 which suggested adding libata.force=nohrst as a boot option to get rid of the problem. I tried that, but the laptop wouldn't suspend. I have been using most recent kernels from: http://kernel.ubuntu.com/~kernel-ppa/mainline/ Currently 3.6.2, but the problem persists. Best regards.
Hello Carlos, Can you please attach the dmesg when your laptop failed to suspend after you added the libata.force=nohrst kernel parameter? Thanks.
Hi Aaron, Actually, putting that parameter back created all sorts of problems. My Unity session would crash, and got a bunch of ext4 errors in dmesg. I had to revert the change to get a usable machine again. Carlos
Hello Carlos, Does 3.5 kernel work for you?
Hi Aaron, I tried both (3.5 and 3.6). Somewhat different ways to crash, but a mess nonetheless. Maybe because I have dm-crypt volume?
Hi Carlos, Can you please post your lspci and full dmesg after a suspend/resume cycle? Thanks.
Hi Aaron, I looked a bit further into this. It turns out Crucial released a firmware upgrade for this drive which, when applied, solved the problem of the slow resume for me. For the record, the firmware is: ata1.00: ATA-9: M4-CT512M4SSD1, 010G, max UDMA/100 (version 010G), and can be found here: http://www.crucial.com/support/firmware.aspx The easiest way to upgrade is to download the mac version, get the .iso from the zip file and 'burn it' to a USB stick using your favorite tool. Thanks for your efforts on this, this bug can now be closed.
Hello Carlos, Glad to know this, and it doesn't seem I've done anything :-)
Aaron, Effort counts! Thanks again.