Bug#834790: aptitude hangs at "Loading cache" when unable to download package list

[manuel . montezelo]

2016-12-24 02:55 Manuel A. Fernandez Montecelo:


This seems to be due to changes in behaviour of apt or some strange
interaction, because the relevant sections of aptitude have not changed
in a long time.  (I didn't experience the same behaviour because I
couldn't upgrade my computer at the time).
[...]

Anyway, I think that I fixed it now, by not being strict with this kind
of errors (to cope with what I think that it's a new behaviour from
libapt)... I am just not sure if this change will bring other problems,
let's see.


Note, just in case... relevant commits of apt seem to be:

commit 1044354995513348f4836772fe77068585091d6b
Author: David Kalnischkies 
Date:   Wed Aug 24 21:49:34 2016 +0200

   improve code & doc for aquire weak/loop failing


commit 2e2865ae53a65c00dd55a892d5b48458f3110366
Author: David Kalnischkies 
Date:   Wed Aug 24 09:47:48 2016 +0200

   do fail on weakhash/loop earlier in acquire


--
Manuel A. Fernandez Montecelo 

Bug#710047: RFH: two base wheezy bugs

[manuel . montezelo]

2013-06-17 12:04 Neil McGovern:

On Sun, Jun 16, 2013 at 09:49:41AM +0200, Holger Levsen wrote:

I'm at loss with what to do with #710047. (random freeze since wheezy)



For info, I'm also experiencing this. I'm having quite a bit of trouble
tracking it down, though I *suspect* at the moment it may have something
to do with the Intel graphics drivers on Thinkpads.

Leave that one with me, I'll try and triage and reassign as appropriate.


Although I am not sure if it's exactly the same issue, these random freezes
happen to me as well, and I suspect that it tends to happen more often when
scrolling in Iceweasel.  I am using Debian unstable updated frequently, since a
few months ago (more or less around the end of 2012).

It randomly freezes, cursor not moving, and I think that it doesn't even act on
magic sysrq sequences (although I only tried once or twice and was not sure of
the combinations in this keyboard).  When I tried to access through ssh I
couldn't, although the light of ethernet keeps blinking as if transmitting data
even many minutes after the freeze (e.g. when returning from lunch).

Sometimes the computer works fine for days, sometimes it freezes two or three
times in a few hours.  Today it happened on second 74 after boot.  On average,
it happens twice per week.  Since I completely switch off the laptop between
workplace and home, I don't know if tends to happen more often when keeping it
running for longer periods.

I tried many kernel versions of Debian kernels and none of them seem to fix the
problem.  I ran memtest86+ several times and the built-in checks from the BIOS,
no problem detected.

Sometimes (1 out of 10 times or so) it throws me to a console where it mentions
NMI errors.  I am usually at work and in a hurry and unable to copy all
interesting messages by hand and search what the issue is.

From dmidecode:

Manufacturer: Dell Inc.
Product Name: Latitude E5520

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core 
Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA 
controller])
Subsystem: Dell Device 049a
Flags: bus master, fast devsel, latency 0, IRQ 46
Memory at e1c0 (64-bit, non-prefetchable) [size=4M]
Memory at d000 (64-bit, prefetchable) [size=256M]
I/O ports at 7000 [size=64]
Expansion ROM at unassigned [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915


Given that I cannot even start to pinpoint the problem, I haven't reported it
all these months, trying to not add noise.  Hopefully this will help somebody to
find a common pattern.

Cheers.
--
Manuel


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