Desde há alguns meses, sofro contínuos congelamentos do meu sistema (Dell XPS 13 2014, i7, Ubuntu 14.04). Se não estou enganado, eles apareceram pela primeira vez em um momento em que os fãs do meu laptop quebraram, então o sistema congelava aleatoriamente (e ficava congelado). Agora eu substituí os fãs e os "congelamentos totais" desapareceram; mas ainda experimento micro-congelamentos muito irritantes (~ ½ segundo): o trabalho usual não é muito afetado, mas assistir a um vídeo do youtube ou ouvir spotify tornou-se praticamente impossível; Não consigo entender se isso é um problema de BIOS, CPU ou Ubuntu.
Deixem-me copiar e colar o syslog dos últimos 30 minutos ou mais: o fato de meu trackpad perder a sincronização muitas vezes parece um sintoma, não a causa dos congelamentos.
Oct 27 10:45:18 delio-xps kernel: [34341.874179] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away.
Oct 27 10:45:43 delio-xps kernel: [34366.893892] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 4 bytes away.
Oct 27 10:46:05 delio-xps anacron[16208]: Job 'cron.daily' terminated
Oct 27 10:46:05 delio-xps anacron[16208]: Normal exit (1 job run)
Oct 27 10:47:18 delio-xps kernel: [34461.961207] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
Oct 27 10:48:33 delio-xps kernel: [34537.004388] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 4 bytes away.
Oct 27 10:48:48 delio-xps kernel: [34552.012241] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
Oct 27 10:49:08 delio-xps kernel: [34572.027774] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 4 bytes away.
Oct 27 10:49:13 delio-xps kernel: [34577.027337] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
Oct 27 10:49:53 delio-xps kernel: [34617.058832] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
Oct 27 10:50:01 delio-xps CRON[20916]: (root) CMD (pkill -f indicator-power-service)
Oct 27 10:50:08 delio-xps kernel: [34632.062841] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away.
Oct 27 10:50:45 delio-xps wpa_supplicant[1740]: message repeated 4 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ]
Oct 27 10:51:14 delio-xps wpa_supplicant[1740]: wlan0: WPA: Group rekeying completed with c8:0e:14:42:80:c3 [GTK=CCMP]
Oct 27 10:51:28 delio-xps kernel: [34712.232648] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
Oct 27 10:51:43 delio-xps kernel: [34727.131013] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 4 bytes away.
Oct 27 10:52:45 delio-xps wpa_supplicant[1740]: wlan0: CTRL-EVENT-SCAN-STARTED
Oct 27 10:53:37 delio-xps AptDaemon: INFO: Quitting due to inactivity
Oct 27 10:53:37 delio-xps AptDaemon: INFO: Quitting was requested
Oct 27 10:53:37 delio-xps dbus[823]: [system] Activating service name='org.debian.apt' (using servicehelper)
Oct 27 10:53:38 delio-xps AptDaemon: INFO: Initializing daemon
Oct 27 10:53:38 delio-xps dbus[823]: [system] Successfully activated service 'org.debian.apt'
Oct 27 10:53:38 delio-xps AptDaemon.PackageKit: INFO: Initializing PackageKit compat layer
Oct 27 10:53:48 delio-xps kernel: [34852.205928] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
Oct 27 10:53:53 delio-xps kernel: [34857.210236] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away.
Oct 27 10:55:13 delio-xps kernel: [34937.266946] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away.
Oct 27 10:55:38 delio-xps kernel: [34962.283382] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 5 bytes away.
Oct 27 10:56:38 delio-xps kernel: [35022.316427] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
Oct 27 10:56:43 delio-xps kernel: [35027.321602] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
Oct 27 10:57:23 delio-xps kernel: [35067.341895] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
Oct 27 10:59:03 delio-xps kernel: [35167.408092] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
Oct 27 10:59:08 delio-xps kernel: [35172.411130] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 5 bytes away.
Oct 27 10:59:13 delio-xps kernel: [35177.417869] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 5 bytes away.
Oct 27 11:00:01 delio-xps CRON[22618]: (root) CMD (pkill -f indicator-power-service)
Oct 27 11:00:45 delio-xps wpa_supplicant[1740]: message repeated 4 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ]
Oct 27 11:01:14 delio-xps wpa_supplicant[1740]: wlan0: WPA: Group rekeying completed with c8:0e:14:42:80:c3 [GTK=CCMP]
Oct 27 11:02:45 delio-xps wpa_supplicant[1740]: wlan0: CTRL-EVENT-SCAN-STARTED
Oct 27 11:03:39 delio-xps AptDaemon: INFO: Quitting due to inactivity
Oct 27 11:03:39 delio-xps AptDaemon: INFO: Quitting was requested
Oct 27 11:03:39 delio-xps dbus[823]: [system] Activating service name='org.debian.apt' (using servicehelper)
Oct 27 11:03:40 delio-xps AptDaemon: INFO: Initializing daemon
Oct 27 11:03:40 delio-xps dbus[823]: [system] Successfully activated service 'org.debian.apt'
Oct 27 11:03:40 delio-xps AptDaemon.PackageKit: INFO: Initializing PackageKit compat layer
Oct 27 11:05:09 delio-xps sudo: pam_ecryptfs: pam_sm_authenticate: /home/delio is already mounted
Oct 27 11:06:08 delio-xps kernel: [35592.683473] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 5 bytes away.
Oct 27 11:09:28 delio-xps kernel: [35792.924462] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
Oct 27 11:10:01 delio-xps CRON[24386]: (root) CMD (pkill -f indicator-power-service)
Oct 27 11:10:38 delio-xps kernel: [35862.856827] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away.
Oct 27 11:10:43 delio-xps kernel: [35867.863068] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 4 bytes away.
Oct 27 11:11:08 delio-xps kernel: [35892.876810] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 4 bytes away.
Oct 27 11:10:45 delio-xps wpa_supplicant[1740]: message repeated 4 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ]
Oct 27 11:11:14 delio-xps wpa_supplicant[1740]: wlan0: WPA: Group rekeying completed with c8:0e:14:42:80:c3 [GTK=CCMP]
Oct 27 11:12:45 delio-xps wpa_supplicant[1740]: wlan0: CTRL-EVENT-SCAN-STARTED
Oct 27 11:13:40 delio-xps AptDaemon: INFO: Quitting due to inactivity
Oct 27 11:13:40 delio-xps AptDaemon: INFO: Quitting was requested
Oct 27 11:13:58 delio-xps kernel: [36062.990345] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away.
Oct 27 11:14:03 delio-xps kernel: [36067.995912] psmouse serio1: TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.