Public bug reported:
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.
There's one suspicious line in the boot log: "drm:parse_csr_fw
[i915_bpo]] ERROR Unknown stepping info, firmware loading failed". I
wonder if that's related to the driver for Intel chip's embedded
graphics.
My current work-around is to do as much work as possible in Win-10 :(
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: 16.10 freeze intel
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https://bugs.launchpad.net/bugs/1656155
Title:
System (keyboard & touchpad) freezes
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