Frequent lockups :(

[phm]

In any case, will you mind posting your /var/log/Xorg.0.log file? That
might list the point at which gdm broke.

phm wrote:
> I am on Debian amd64 running XFCE 4.12 and have not experienced
> "frequent lock ups" recently. I have Chromium and Iceweasel packages. My
> guess is there are Debian-specific packages which have broken. I want to
> point out that you can't be sure before you have tried another desktop.
>
> Warren Block wrote:
>> On Mon, 28 Mar 2016, brian wrote:
>>
>>> Is there anybody else out there using Debian Jessie 64-bit and XFCE on
>>> an AMD PC who, for the 3 or 4 days, has been seeing frequent lockups
>>> of their PC? The crashes seem to occur when I'm using a browser, and
>>> using Iceweasel is worse than using Chromium. When it happens, that's
>>> it, everything locks solid, mouse cursor won't move, the keyboard
>>> doesn't appear to work, the display clock stops, the only thing I can
>>> do is to use the reboot switch. The only thing I notice is that the
>>> drive access light is still flickering (once every 5-10 seconds) and
>>> there's been a disk repair needed every time I've had to reboot.
>>>
>>> I know there was an amd64-microcode package in the last bunch of
>>> updates, it's for AMD processors other than mine (a Phenom II 6-core)
>>> so I uninstalled that, with no apparent effect on the problem.
>>>
>>> The 'about XFCE' dialog gives the version as "4.10, distributed by
>>> Debian".
>>>
>>> Anybody have any ideas, please? The lockups are happening every couple
>>> of hours or so.
>> xfce 4.10 on FreeBSD is used here daily, with no problems at all,
>> although generally on Intel processors.
>>
>> There are a lot of things this could be, but hardware problems would
>> be high on my list.  I would check that the power supply and system
>> fans are clear and spinning, the heatsinks are not clogged with dust,
>> that sort of thing.  If the machine is more than a few years old, look
>> for bulged capacitors on the motherboard near the CPU.  It's usually
>> difficult to see into a power supply, but try to look there also.
>> Failed caps can cause just this type of intermittent problem.  So can
>> RAM that is failing.
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