[Intel-gfx] Approximately every other day video will freeze for no reason at all and no specific time between freezes.

Mike Lothian mike at fireburn.co.uk
Mon Oct 5 02:05:31 PDT 2015


I think you might have fallen asleep on your keyboard ;-)

On Sun, 4 Oct 2015 5:41 pm M. Thierry <mthierry.gfx at gmail.com> wrote:

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> On Oct 4, 2015 3:32 PM, "M. Thierry" <mthierry.gfx at gmail.com> wrote:
>
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>> On Oct 4, 2015 1:01 PM, "Mike Lothian" <mike at fireburn.co.uk> wrote:
>>
>>> Hi
>>>
>>> I'm not certain but I think I faced the same issue when I was enabling
>>> atomic on my sandybridge laptop, it was like one of the planes stopped
>>> being updated. When I reported it all that time ago I was told atomic was
>>> considered unstable and I shouldn't be using it.
>>>
>>> Has atomic been switched on recently?
>>>
>>> Unfortunately the laptop is no longer functional so I can't test any of
>>> this out
>>>
>>> Mike
>>>
>>> On Sun, 4 Oct 2015 10:32 Martin Steigerwald <martin at lichtvoll.de> wrote:
>>>
>>>> Hi Chris, hi Intel graphics developers,
>>>>
>>>> Am Freitag, 2. Oktober 2015, 16:06:30 CEST schrieb Chris:
>>>> > To elaborate on this. The video is frozen to include the clock
>>>> however I
>>>> > can move the mouse cursor around the screen. I can not however switch
>>>> > between window desktops. This happened on 28 Sept 2015 after an uptime
>>>>
>>>> I have seen exactly this issue on ThinkPad T520 with Sandybridge
>>>> graphics.
>>>>
>>>> With one exception: At least sometimes I have been able to switch to
>>>> tty1 and
>>>> do killall -u <affecteduser> to get back to sddm login screen.
>>>>
>>>> I didn´t do anything about it so far. Driver is running in uxa mode,
>>>> cause
>>>> with sna I experienced hard freezes with mouse freezing and even data
>>>> loss. I
>>>> lost my GPG public key ring after a hard freeze after a gpg --recv-keys
>>>> operation (restored from backup meanwhile). This was at DebConf and a
>>>> developer I worked with recommended me to switch from SNA to UXA. And
>>>> some
>>>> time ago I had it that kwin sometimes told me it restarted compositing
>>>> due to
>>>> a hang in the graphics driver.
>>>>
>>>> I find freezing issues extremely hard to debug. First off often they
>>>> happen
>>>> when I am not willing to spend even a single minute on them. Second:
>>>> What to
>>>> do anyway? On a hard freeze, I could try Sys-Rq key combo to sync disk
>>>> contents, and I think I may better enable it anyway to avoid data loss
>>>> in
>>>> those situations, and hope that *some* information on *why* the hard
>>>> freeze
>>>> happened still lands in kern.log or Xorg log. On soft freezes I can do
>>>> something if I can still switch to tty1. But what? I have no idea what
>>>> information I can gather *efficiently* to provide at least a somewhat
>>>> meaningful initial bug report within less than 15 to 30 minutes. I
>>>> don´t just
>>>> want to do *something* in that case, but I want something that has a
>>>> good
>>>> chance on giving a real insight on why the bug is happened and a good
>>>> hint at
>>>> what can be done to fix it.
>>>>
>>>> git-bisect is out of question for me for something that happens so
>>>> irregularily. It would take an insane amount of time with running
>>>> kernels that
>>>> are probably way to unstable for production use – as it may include
>>>> pre-rc1
>>>> kernels - anyway. Even tough I go to the limits on this machine
>>>> regarding
>>>> production use, this is still a production machine and I usually wait
>>>> till rc2
>>>> kernels to try out a new kernel.
>>>>
>>>> So I appreciate any pointers what to *efficiently* do about issues like
>>>> this.
>>>> In case I miss any documentated bug triaging howto please point me to
>>>> it.
>>>> Ideally some kind of bug-reporting tool would be nice. Just run a
>>>> script which
>>>> collects all data that can be helpful into a file that I can attach to
>>>> a bug
>>>> report.
>>>>
>>>>
>>>> That said in general I am really quite happy with the Intel drivers.
>>>>
>>>>
>>>> martin at merkaba:~> phoronix-test-suite system-info
>>>>
>>>> Phoronix Test Suite v5.2.1
>>>> System Information
>>>>
>>>> Hardware:
>>>> Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO
>>>> 42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory:
>>>> 16384MB,
>>>> Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel
>>>> HD 3000
>>>> (1300MHz), Audio: Conexant CX20590, Monitor: P24T-7 LED, Network: Intel
>>>> 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205
>>>>
>>>> Software:
>>>> OS: Debian unstable, Kernel: 4.3.0-rc3-tp520-btrfstrim+ (x86_64),
>>>> Desktop: KDE
>>>> Frameworks 5, Display Server: X Server 1.17.2, Display Driver: intel
>>>> 2.99.917,
>>>> OpenGL: 3.3 Mesa 11.0.2, Compiler: GCC 5.2.1 20150911, File-System:
>>>> btrfs,
>>>> Screen Resolution: 3840x1080
>>>>
>>>> lspci -nnv:
>>>>
>>>> 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd
>>>> Generation
>>>> Core Processor Family Integrated Graphics Controller [8086:0126] (rev
>>>> 09)
>>>> (prog-if 00 [VGA controller])
>>>>         Subsystem: Lenovo Device [17aa:21cf]
>>>>         Flags: bus master, fast devsel, latency 0, IRQ 26
>>>>         Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
>>>>         Memory at e0000000 (64-bit, prefetchable) [size=256M]
>>>>         I/O ports at 5000 [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
>>>>
>>>> Ciao,
>>>> --
>>>> Martin
>>>> _______________________________________________
>>>> Intel-gfx mailing list
>>>> Intel-gfx at lists.freedesktop.org
>>>> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>>>>
>>>
>>> _______________________________________________
>>> Intel-gfx mailing list
>>> Intel-gfx at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>>>
>>>
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