Sorry about the late response, I was without my laptop due to an
unrelated problem.
The patch seems to have fixed the issue - it didn't occur again after
applying it. I did however use driver backports and applied the patch to
those myself, as opposed to compiling the entire kernel from the
repository you provided.
On 2015-11-04 08:30, Michal Kazior wrote:
On 4 November 2015 at 01:00, <[email protected]> wrote:
Hello,
I am having issues with the ath10k driver and the Qualcomm Atheros
QCA6174
network adapter. Seemingly randomly, the wireless connection on my
laptop
stops working. dmesg outputs a long series of:
[11061.645929] ath10k_pci 0000:07:00.0: failed to wake target for
write32 of
0x0000025c at 0x0003543c: -110
This looks very similar to how QCA99X0 failed when PCI PS was enabled
for the card:
http://lists.infradead.org/pipermail/ath10k/2015-September/005939.html
As far as I know the reason of failure is not really understood and it
simply was disabled to fix reliability.
It seems that QCA6174 suffers from this as well - at least on your
platform. This is rather sad as we'll probably need to disable it by
default for QCA6174 now as well which will increase power consumption
a little bit.
Rarely a reboot fixes this and I can use the network adapter again,
but more
often than not, after a reboot, there is no output related to ath10k
in
dmesg and the laptop is behaving as if the network adapter is not
present.
The adapter eventually starts working again - I have not noticed a
specific
pattern, sometimes it is after a few hours, sometimes I couldn't get
it
working for days.
I have tried thoroughly searching online but was unable to find
anything
that would be of help. I do admit I am a little out of my depth here,
but I
will happily provide any further information necessary in order to
diagnose
and fix this.
I am on Xubuntu 15.10, kernel 4.2.0-16-generic.
Can you perhaps try compiling the kernel from:
git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
with the following diff applied:
diff --git a/drivers/net/wireless/ath/ath10k/pci.c
b/drivers/net/wireless/ath/ath10k/pci.c
index 3fca200b986c..edf7a7637d88 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -2968,7 +2968,7 @@ static int ath10k_pci_probe(struct pci_dev *pdev,
case QCA6164_2_1_DEVICE_ID:
case QCA6174_2_1_DEVICE_ID:
hw_rev = ATH10K_HW_QCA6174;
- pci_ps = true;
+ pci_ps = false;
break;
case QCA99X0_2_0_DEVICE_ID:
hw_rev = ATH10K_HW_QCA99X0;
and report back if this fixes the problem for you, please?
Michał
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