On Mon, Feb 2, 2015 at 9:56 PM, Gerlof Fokkema <[email protected]> wrote:
>
> Dear Emmanuel,
>
> I have compiled and experimented with the kernel from this specific commit.
> While I don't get any crash logs from iwlmvm anymore, network performance is still truly horrible.
>
> After connecting the WiFi connection seems to work fine for a few minutes,
> and after that the network card does not seem to flush any data anymore.
> When running a ping job together with a download, fully utilizing WiFi, after a few minutes (or less) I get:
>
> 64 bytes from 172.16.2.1: icmp_seq=63 ttl=64 time=1476 ms
> 64 bytes from 172.16.2.1: icmp_seq=64 ttl=64 time=476 ms
> 64 bytes from 172.16.2.1: icmp_seq=65 ttl=64 time=10.6 ms
> 64 bytes from 172.16.2.1: icmp_seq=66 ttl=64 time=1558 ms
> 64 bytes from 172.16.2.1: icmp_seq=67 ttl=64 time=569 ms
> 64 bytes from 172.16.2.1: icmp_seq=68 ttl=64 time=9.97 ms
> ping: sendmsg: No buffer space available
> ping: sendmsg: No buffer space available
>
> It seems to me there is something fundamentally wrong with flushing network traffic,
> and with the newest commits it doesn't log these problems anymore either.
>
> This problem persists on linux 3.18.0 - 3.18.5 and on the aforementioned 3.19 branch.
Can you try with this firmware:
https://git.kernel.org/cgit/linux/kernel/git/iwlwifi/linux-firmware.git/plain/iwlwifi-7260-10.ucode?id=d5cd7a6cb5f85f6234cca596354e440061a28aa4
Please copy the file to /lib/firmware/
you may want to back up the previous version first.
>
> Kind regards,
>
> Gerlof Fokkema
>
> On Thu, Jan 22, 2015 at 7:33 PM, Emmanuel Grumbach <[email protected]> wrote:
>>
>> Hi,
>>
>> On Thu, Jan 22, 2015 at 4:14 PM, Gerlof Fokkema
>> <[email protected]> wrote:
>> > Hello Emmanuel,
>> >
>> > First of all, thanks for your previous reply.
>> > I'm glad the issue is known and being looked at.
>> >
>> > Recently I tried linux kernel 3.18.2 on Arch linux and had the same
>> > issues I previously mentioned.
>> > Is there any bug report on this I can follow or any other way to be updated?
>> >
>>
>> This should help:
>> https://git.kernel.org/cgit/linux/kernel/git/kvalo/wireless-drivers.git/commit/?id=4e6c48e0984e28d064ee8fbc292aee7b7920c507
>>
>> >
>> > On Tue, Dec 30, 2014 at 3:30 PM, Emmanuel Grumbach <[email protected]> wrote:
>> >> Hi,
>> >>
>> >> Sorry for the delay. This one got lost in my inbox.
>> >>
>> >> On Sat, Dec 27, 2014 at 4:03 PM, Gerlof Fokkema
>> >> <[email protected]> wrote:
>> >>> Hi all,
>> >>>
>> >>> Since a few weeks I own a laptop with an Intel Wireless 7260 wireless adapter.
>> >>> I first noticed that my connection started dropping when I transferred
>> >>> large files over WiFi.
>> >>> Later on I noticed this problem when the signal strength was low as well.
>> >>>
>> >>> I seem to be experiencing the bug described here:
>> >>> https://bugzilla.kernel.org/show_bug.cgi?id=56581
>> >>
>> >> This bug relates to dvm - which is de-facto another driver. We made
>> >> this work around because
>> >> of firmware issues. These issues aren't supposed to happen on devices
>> >> supported by iwlmvm.
>> >> Obviously, they do. You are not the only one to report this issue.
>> >> I will discuss it with our firmware team.
>> >>
>> >>>
>> >>> However, if I read the changelogs correctly, this should've been fixed
>> >>> in 3.17.3.
>> >>>
>> >>> Atttached you'll find dmesg.log with the error.
>> >>> Excerpt:
>> >>> [ 152.941067] iwlwifi 0000:03:00.0: fail to flush all tx fifo queues Q 2
>> >>> [ 152.941072] iwlwifi 0000:03:00.0: Current SW read_ptr 209 write_ptr 234
>> >>> [ 152.941097] iwl data: 00000000: 00 00 00 00 00 00 00 00 00 00 00 00
>> >>> 00 00 00 00 ................
>> >>> [ 152.941111] iwlwifi 0000:03:00.0: FH TRBs(0) = 0x80003000
>> >>> [ 152.941125] iwlwifi 0000:03:00.0: FH TRBs(1) = 0xc01100f2
>> >>> [ 152.941139] iwlwifi 0000:03:00.0: FH TRBs(2) = 0x00000000
>> >>> When I try reconnecting to WiFi I get dozens more of those errors.
>> >>>
>> >>> Can someone point me in the right direction for this?
>> >>> Is there already a bugreport for this on kernel 3.17.6?
>> >>> Should you need more information, I'm happy to supply.
>> >>>
>> >>> For now I've reverted to 3.16.4, since it seems to work better...
>> >>
>> >> Probably because 3.16 uses an older firmware (-9.ucode).
>> >> This is also an interesting input - although I heard complaints about
>> >> this very same issue on -9.ucode as well.
>> >>
>> >>>
>> >>> Kind regards,
>> >>> Gerlof Fokkema
>
>
Dear Emmanuel,
The attached firmware works a LOT better than previous versions.
For the first time since owning this laptop I'm able to stream .mkv
files over a distance > 10 meters.
When enabling WiFi, connecting to a network is a lot faster.
Data throughput is a lot better as well.
However, it's still not perfect, as the connection works for about 10
minutes before the whole driver suddenly stops working.
Again there is no clue as to why this is happening anywhere in dmesg,
syslog or w/e.
Disabling and enabling WiFi via rfkill or by reloading the module
fixes the problem for another 10 minutes.
If I leave the connection idle, it doesn't crash as often.
All in all, thank you very much for your help until now.
Functionality is already a lot better than it was, and the WiFi card
is now actually usable (enough) for me.
Kind regards,
Gerlof Fokkema
On Mon, Feb 2, 2015 at 10:19 PM, Emmanuel Grumbach <[email protected]> wrote:
> On Mon, Feb 2, 2015 at 9:56 PM, Gerlof Fokkema <[email protected]> wrote:
>>
>> Dear Emmanuel,
>>
>> I have compiled and experimented with the kernel from this specific commit.
>> While I don't get any crash logs from iwlmvm anymore, network performance is still truly horrible.
>>
>> After connecting the WiFi connection seems to work fine for a few minutes,
>> and after that the network card does not seem to flush any data anymore.
>> When running a ping job together with a download, fully utilizing WiFi, after a few minutes (or less) I get:
>>
>> 64 bytes from 172.16.2.1: icmp_seq=63 ttl=64 time=1476 ms
>> 64 bytes from 172.16.2.1: icmp_seq=64 ttl=64 time=476 ms
>> 64 bytes from 172.16.2.1: icmp_seq=65 ttl=64 time=10.6 ms
>> 64 bytes from 172.16.2.1: icmp_seq=66 ttl=64 time=1558 ms
>> 64 bytes from 172.16.2.1: icmp_seq=67 ttl=64 time=569 ms
>> 64 bytes from 172.16.2.1: icmp_seq=68 ttl=64 time=9.97 ms
>> ping: sendmsg: No buffer space available
>> ping: sendmsg: No buffer space available
>>
>> It seems to me there is something fundamentally wrong with flushing network traffic,
>> and with the newest commits it doesn't log these problems anymore either.
>>
>> This problem persists on linux 3.18.0 - 3.18.5 and on the aforementioned 3.19 branch.
>
> Can you try with this firmware:
> https://git.kernel.org/cgit/linux/kernel/git/iwlwifi/linux-firmware.git/plain/iwlwifi-7260-10.ucode?id=d5cd7a6cb5f85f6234cca596354e440061a28aa4
>
> Please copy the file to /lib/firmware/
>
> you may want to back up the previous version first.
>
>>
>> Kind regards,
>>
>> Gerlof Fokkema
>>
>> On Thu, Jan 22, 2015 at 7:33 PM, Emmanuel Grumbach <[email protected]> wrote:
>>>
>>> Hi,
>>>
>>> On Thu, Jan 22, 2015 at 4:14 PM, Gerlof Fokkema
>>> <[email protected]> wrote:
>>> > Hello Emmanuel,
>>> >
>>> > First of all, thanks for your previous reply.
>>> > I'm glad the issue is known and being looked at.
>>> >
>>> > Recently I tried linux kernel 3.18.2 on Arch linux and had the same
>>> > issues I previously mentioned.
>>> > Is there any bug report on this I can follow or any other way to be updated?
>>> >
>>>
>>> This should help:
>>> https://git.kernel.org/cgit/linux/kernel/git/kvalo/wireless-drivers.git/commit/?id=4e6c48e0984e28d064ee8fbc292aee7b7920c507
>>>
>>> >
>>> > On Tue, Dec 30, 2014 at 3:30 PM, Emmanuel Grumbach <[email protected]> wrote:
>>> >> Hi,
>>> >>
>>> >> Sorry for the delay. This one got lost in my inbox.
>>> >>
>>> >> On Sat, Dec 27, 2014 at 4:03 PM, Gerlof Fokkema
>>> >> <[email protected]> wrote:
>>> >>> Hi all,
>>> >>>
>>> >>> Since a few weeks I own a laptop with an Intel Wireless 7260 wireless adapter.
>>> >>> I first noticed that my connection started dropping when I transferred
>>> >>> large files over WiFi.
>>> >>> Later on I noticed this problem when the signal strength was low as well.
>>> >>>
>>> >>> I seem to be experiencing the bug described here:
>>> >>> https://bugzilla.kernel.org/show_bug.cgi?id=56581
>>> >>
>>> >> This bug relates to dvm - which is de-facto another driver. We made
>>> >> this work around because
>>> >> of firmware issues. These issues aren't supposed to happen on devices
>>> >> supported by iwlmvm.
>>> >> Obviously, they do. You are not the only one to report this issue.
>>> >> I will discuss it with our firmware team.
>>> >>
>>> >>>
>>> >>> However, if I read the changelogs correctly, this should've been fixed
>>> >>> in 3.17.3.
>>> >>>
>>> >>> Atttached you'll find dmesg.log with the error.
>>> >>> Excerpt:
>>> >>> [ 152.941067] iwlwifi 0000:03:00.0: fail to flush all tx fifo queues Q 2
>>> >>> [ 152.941072] iwlwifi 0000:03:00.0: Current SW read_ptr 209 write_ptr 234
>>> >>> [ 152.941097] iwl data: 00000000: 00 00 00 00 00 00 00 00 00 00 00 00
>>> >>> 00 00 00 00 ................
>>> >>> [ 152.941111] iwlwifi 0000:03:00.0: FH TRBs(0) = 0x80003000
>>> >>> [ 152.941125] iwlwifi 0000:03:00.0: FH TRBs(1) = 0xc01100f2
>>> >>> [ 152.941139] iwlwifi 0000:03:00.0: FH TRBs(2) = 0x00000000
>>> >>> When I try reconnecting to WiFi I get dozens more of those errors.
>>> >>>
>>> >>> Can someone point me in the right direction for this?
>>> >>> Is there already a bugreport for this on kernel 3.17.6?
>>> >>> Should you need more information, I'm happy to supply.
>>> >>>
>>> >>> For now I've reverted to 3.16.4, since it seems to work better...
>>> >>
>>> >> Probably because 3.16 uses an older firmware (-9.ucode).
>>> >> This is also an interesting input - although I heard complaints about
>>> >> this very same issue on -9.ucode as well.
>>> >>
>>> >>>
>>> >>> Kind regards,
>>> >>> Gerlof Fokkema
>>
>>