Ubuntu na SSD občas padá do komatu

[compaq]

Moje Ubuntu 14.04 na SSD se občas, jednou dvakrát denně unaví výkonem a skončí v komatu, nebo na kapačách.

část disku, nebo celý je pouze pro čtení, aplikace se tudíž zblbnou
někdy mrzne obrazovka
někdy i myš
někdy zčerná
často se zahltí graf na panelu IO waitem

po tvrdém restartu naběhne 30s grub a potom chce pomocí F opravit data na disku, po opravě naběhne normálně běžní krásně svižně

Díky za každou radu a tip.

Poslední slova před kómatem jsou (syslog):

Dec  2 10:58:25 tomas-OptiPlex-GX620 kernel: [ 5140.505621] ata1.00: Enabling discard_zeroes_data
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.144075] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.144086] ata1.00: BMDMA stat 0x26
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.144093] ata1.00: failed command: READ DMA
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.144104] ata1.00: cmd c8/00:00:00:4c:3c/00:00:00:00:00/e0 tag 0 dma 131072 in
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.144104]          res 51/84:3f:c1:4c:3c/84:00:00:00:00/e0 Emask 0x30 (host bus error)
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.144111] ata1.00: status: { DRDY ERR }
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.144115] ata1.00: error: { ICRC ABRT }
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.144132] ata1: soft resetting link
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.316297] ata1.00: configured for UDMA/33
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.316321] ata1: EH complete
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.318024] ata1.00: Enabling discard_zeroes_data
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.372594] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.372602] ata1.00: BMDMA stat 0x26
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.372607] ata1.00: failed command: READ DMA
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.372614] ata1.00: cmd c8/00:00:00:70:8c/00:00:00:00:00/e0 tag 0 dma 131072 in
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.372614]          res 51/84:cf:31:70:8c/84:00:00:00:00/e0 Emask 0x30 (host bus error)
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.372618] ata1.00: status: { DRDY ERR }
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.372620] ata1.00: error: { ICRC ABRT }
Dec  2 10:59:33 tomas-OptiPlex-GX620 kernel: [ 5209.372633] ata1: soft resetting link
Dec  2 10:59:34 tomas-OptiPlex-GX620 kernel: [ 5209.544245] ata1.00: configured for UDMA/33
Dec  2 10:59:34 tomas-OptiPlex-GX620 kernel: [ 5209.544266] ata1: EH complete
Dec  2 10:59:34 tomas-OptiPlex-GX620 kernel: [ 5209.546685] ata1.00: Enabling discard_zeroes_data
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.424097] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.424106] ata1.00: BMDMA stat 0x26
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.424113] ata1.00: failed command: READ DMA
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.424123] ata1.00: cmd c8/00:00:98:1c:7b/00:00:00:00:00/e0 tag 0 dma 131072 in
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.424123]          res 51/84:ef:a9:1c:7b/84:00:00:00:00/e0 Emask 0x30 (host bus error)
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.424129] ata1.00: status: { DRDY ERR }
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.424133] ata1.00: error: { ICRC ABRT }
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.424148] ata1: soft resetting link
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.596281] ata1.00: configured for UDMA/33
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.596304] ata1: EH complete
Dec  2 11:00:10 tomas-OptiPlex-GX620 kernel: [ 5245.597798] ata1.00: Enabling discard_zeroes_data
Dec  2 11:02:57 tomas-OptiPlex-GX620 dbus[486]: [system] Activating service name='org.freedesktop.hostname1' (using servicehelper)
Dec  2 11:02:57 tomas-OptiPlex-GX620 kernel: [ 5412.495015] systemd-hostnamed[4296]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
Dec  2 11:02:57 tomas-OptiPlex-GX620 dbus[486]: [system] Successfully activated service 'org.freedesktop.hostname1'

[Savalas]

Koukni do smartu jestli nevylit CRC error, pak by to mohl byt sata kablik/konektor, uz sem jeden takovy uspesne vyreklamoval.

[compaq]

smart ok, disk topi jak blázen