Ubuntu totally freezes when using Firefox, can't access TTY and REISUB doesn't work.
- Xubuntu 15.04 x86-64 (up to date/proposed not active)
- Firefox 38
- Intel Celeron J1900 with Intel Graphics (Bay Trail)
- 4GB RAM
Difficult to target the problem because it may occur after 5 minutes or after 10 hours of Firefox usage. I tried a new profile with hardware acceleration off, smooth scroll off and uninstalled flash but same thing.
Here's syslog (2 hours before freeze, freeze/hard reboot at 23:30)
Jun 8 21:17:01 heaven CRON[4228]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Jun 8 22:17:01 heaven CRON[4590]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Jun 8 22:52:15 heaven kernel: [18841.243021] perf interrupt took too long (5003 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
Jun 8 23:17:01 heaven CRON[5077]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Jun 8 23:30:26 heaven rsyslogd: [origin software="rsyslogd" swVersion="7.4.4" x-pid="702" x-info="http://www.rsyslog.com"] start
Jun 8 23:30:26 heaven rsyslogd: rsyslogd's groupid changed to 110
Jun 8 23:30:26 heaven rsyslogd: rsyslogd's userid changed to 104
Jun 8 23:30:26 heaven systemd-modules-load[201]: Inserted module 'lp'
Jun 8 23:30:26 heaven systemd-modules-load[201]: Inserted module 'ppdev'
Jun 8 23:30:26 heaven systemd-modules-load[201]: Inserted module 'parport_pc'
Jun 8 23:30:26 heaven systemd-modules-load[201]: Module 'fuse' is builtin
Jun 8 23:30:26 heaven systemd[1]: Started Apply Kernel Variables.
Jun 8 23:30:26 heaven systemd[1]: Started Create Static Device Nodes in /dev.
Jun 8 23:30:26 heaven systemd[1]: Starting udev Kernel Device Manager...
Jun 8 23:30:26 heaven systemd-udevd[279]: starting version 219
Jun 8 23:30:26 heaven systemd[1]: Started Uncomplicated firewall.
Jun 8 23:30:26 heaven systemd[1]: Started udev Kernel Device Manager.
Jun 8 23:30:26 heaven systemd[1]: Starting Show Plymouth Boot Screen...
Jun 8 23:30:26 heaven systemd[1]: Started Show Plymouth Boot Screen.
Jun 8 23:30:26 heaven systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
Jun 8 23:30:26 heaven systemd[1]: Started Forward Password Requests to Plymouth Directory Watch.
Jun 8 23:30:26 heaven systemd[1]: Starting Forward Password Requests to Plymouth Directory Watch.
Jun 8 23:30:26 heaven systemd[1]: Created slice system-ifup.slice.
Jun 8 23:30:26 heaven systemd[1]: Starting system-ifup.slice.
Jun 8 23:30:26 heaven mtp-probe: checking bus 1, device 2: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-1"
Jun 8 23:30:26 heaven mtp-probe: checking bus 1, device 6: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.4"
Jun 8 23:30:26 heaven mtp-probe: checking bus 1, device 5: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.3"
Jun 8 23:30:26 heaven mtp-probe: bus: 1, device: 6 was not an MTP device
I've recently added i915.enable_rc6=0 to grub to prevent video players to freeze the system with harware acceleration activated (due to this bug) so I've reverted the change to see if Firefox is affected but with RC6 activated i have both freezes for video players and Firefox so i don't think it's related but I want to be as specific as possible for those who can help me.
Edit 06/10 > After more research, it seems disable intel-pstate could help me, so i added intel_pstate=disable to boot parameters in GRUB. Since I started the computer, no crashes but I'll wait a little longer before classifying the case as solved.
