[Bug 1656155] Re: System (keyboard & touchpad) freezes

[Viacheslav]

I have fully the same situation with Lenovo v310-15 IKB and i5-7200u,
HD620 graphic on board. I had this bug on fresh installed Ubuntu 16.04.2
and 16.10

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Title:
  System (keyboard & touchpad) freezes

Status in libdrm package in Ubuntu:
  Confirmed

Bug description:
  I have a 1-month old Acer Aspire F5-573-58VX that came with Win-10
  installed. It relies on its Intel i5-7200u for its graphics (HD 620).
  It runs Win-10 with no problems (other than Win-10 itself), so I do
  not suspect the hardware.

  I succeeded in dual-booting Ubuntu 16.04 with EFI and secure-boot both
  enabled, but was suffering random freezes at 3-30 minutes of use, even
  after setting the c-state limit in grub. It hangs both with and
  without Intel microcode. So I upgraded to 16.10 hoping that a newer
  kernel would have a fix in it.

  It's still freezing at random (many apps, and sometimes using only the
  desktop controls). It still has the c-state parameter in grub.

  It appears that if I leave the system untouched with the cursor in an
  empty area, then no freeze will occur (I can see display changing) as
  long as I don't touch anything. Bittorrent runs reliably overnight,
  and then the machine can freeze within seconds of my moving the cursor
  to a control in the morning.

  Thunderbird is also suspicious: I can work most of an hour OK as long
  as I never move the cursor over the scroll slider in the folder pane.
  However, bringing the cursor close enough to change the slider's
  appearance will usually freeze the machine. Update: I've now
  experienced a freeze while the cursor was stationary and I was merely
  typing into an email message window.

  When it freezes, the machine goes quiet (it's not spinning). There's
  no message to the GUI, only a sudden halt. When frozen, soft restart
  and reboot (ctrl-alt-back & ctrl-alt-del) both fail. Only a forced
  power-off has had any effect. (I'll try your alt+sysreq combos in my
  next freeze).

  Synaptic says I have an intel driver update utility installed, but I
  don't know if it has run. When I try to sudo it, I am told that the
  command is not found. I have been unable to locate it in the file
  system. If anyone knows where that goes (or where to hunt), that might
  be helpful.

  I do not (yet) know how to ssh into the sick machine to get kernel
  logs or crash dumps. I'm a user-space programmer, not a sysadmin, so I
  have a learning curve to open the firewall enough to allow an
  intrusion, and more learning curves for the cryptic debugging tools.

  var/log/kern.log has this:
  Jan 14 10:43:26 prop6 kernel: [    1.002400] [drm:parse_csr_fw [i915_bpo]] *ERROR* Unknown stepping info, firmware loading failed
  Jan 14 10:43:26 prop6 kernel: [    1.002405] i915_bpo 0000:00:02.0: Failed to load DMC firmware [https://01.org/linuxgraphics/intel-linux-graphics-firmwares], disabling runtime power management.
  Jan 14 10:43:26 prop6 kernel: [    1.006089] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
  Jan 14 10:43:26 prop6 kernel: [    1.018209] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
  Jan 14 10:43:26 prop6 kernel: [    1.018522] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input5
  Jan 14 10:43:26 prop6 kernel: [    1.018601] [drm] Initialized i915_bpo 1.6.0 20160229 for 0000:00:02.0 on minor 0
  Jan 14 10:43:26 prop6 kernel: [    1.064117] r8169 0000:03:00.1 enp3s0f1: renamed from eth0
  Jan 14 10:43:26 prop6 kernel: [    1.142340] fbcon: inteldrmfb (fb0) is primary device
  Jan 14 10:43:26 prop6 kernel: [    1.142437] Console: switching to colour frame buffer device 240x67
  Jan 14 10:43:26 prop6 kernel: [    1.142466] i915_bpo 0000:00:02.0: fb0: inteldrmfb frame buffer device

  My current work-around is to do as much work as possible in Win-10  :(

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