On mercoledì 7 settembre 2016 11:32:24 CEST Kalle Valo wrote: > Valerio Passini <valerio.passini@xxxxxxxxx> writes: > > I have found some connection problems since 4.7 release using ath9k that > > turn the wifi pretty useless, I think it might be something in the power > > management because the signal seems really low. Previously, up to kernel > > 4.6.7 everything worked very well. > > > > This is a sample of dmesg in kernel 4.7.2: > > 239.898935] wlp4s0: authenticate with XX:XX:XX:XX:XX:XX > > > > [ 239.919995] wlp4s0: send auth to XX:XX:XX:XX:XX:XX (try 1/3) > > [ 239.931877] wlp4s0: authenticated > > [ 239.932357] wlp4s0: associate with XX:XX:XX:XX:XX:XX (try 1/3) > > [ 239.942171] wlp4s0: RX AssocResp from XX:XX:XX:XX:XX:XX (capab=0x431 > > status=0 aid=2) > > [ 239.942301] wlp4s0: associated > > [ 244.802853] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 > > AR_DIAG_SW=0x02000020 DMADBG_7=0x0000 > > 6100 > > [ 245.931832] wlp4s0: authenticate with XX:XX:XX:XX:XX:XX > > [ 245.953028] wlp4s0: send auth to XX:XX:XX:XX:XX:XX (try 1/3) > > [ 245.958702] wlp4s0: authenticated > > [ 245.960386] wlp4s0: associate withXX:XX:XX:XX:XX:XX (try 1/3) > > [ 245.980543] wlp4s0: RX AssocResp from XX:XX:XX:XX:XX:XX (capab=0x431 > > status=0 aid=2) > > > > lspci on 4.6.7 kernel: > > 04:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network > > Adapter (rev 01) > > > > Subsystem: AzureWave AR9485 Wireless Network Adapter > > Flags: bus master, fast devsel, latency 0, IRQ 18 > > Memory at f7900000 (64-bit, non-prefetchable) [size=512K] > > Expansion ROM at f7980000 [disabled] [size=64K] > > Capabilities: [40] Power Management version 2 > > Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+ > > Capabilities: [70] Express Endpoint, MSI 00 > > Capabilities: [100] Advanced Error Reporting > > Capabilities: [140] Virtual Channel > > Capabilities: [160] Device Serial Number 00-00-00-00-00-00-00-00 > > Kernel driver in use: ath9k > > Kernel modules: ath9k > > > > Probably you need some debugging output, but before recompiling the kernel > > I would like to know if you are interested in any kind of help from me > > and what steps I should take (I'm able to help in testing patches but I'm > > not familiar with git). Thank you > > Usually it's really helpful if you can find the commit id which broke > it. 'git bisect' is a great tool to do that and this seems to be a nice > tutorial how to use it: > > http://webchick.net/node/99 > > Instead of commit ids you can use release tags like v4.6 and v4.7 to > make it easier to start the bisect. Just make sure that v4.7 is really > broken and v4.6 works before you start the bisection. Hi Kalle, I tried to understand the whole procedure related to git and git bisect, and this is the first time I try it, so I can have done some mistake. In the git log you'll find the commit that could be guilty for the behaviour I reported yesterday. Anyhow, the resulting commit doesn't make any sense to me. If you have any request, please send an email in cc to me, because I want to unsuscribe this mailing list since it's too high volume for me. Best regards Valerio git bisect log git bisect start # good: [2dcd0af568b0cf583645c8a317dd12e344b1c72a] Linux 4.6 git bisect good 2dcd0af568b0cf583645c8a317dd12e344b1c72a # bad: [523d939ef98fd712632d93a5a2b588e477a7565e] Linux 4.7 git bisect bad 523d939ef98fd712632d93a5a2b588e477a7565e # good: [0694f0c9e20c47063e4237e5f6649ae5ce5a369a] radix tree test suite: remove dependencies on height git bisect good 0694f0c9e20c47063e4237e5f6649ae5ce5a369a # good: [e4f7bdc2ec0d0dcc27f7d70db27a620dfdc1f697] Merge branch 'for-4.7-zac' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata git bisect good e4f7bdc2ec0d0dcc27f7d70db27a620dfdc1f697 # bad: [049ec1b5a76d34a6980cccdb7c0baeb4eed7a993] Merge tag 'drm-fixes-for- v4.7-rc2' of git://people.freedesktop.org/~airlied/linux git bisect bad 049ec1b5a76d34a6980cccdb7c0baeb4eed7a993 # good: [a10c38a4f385f5d7c173a263ff6bb2d36021b3bb] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client git bisect good a10c38a4f385f5d7c173a263ff6bb2d36021b3bb # bad: [9ba55cf7cfbfd12a7e914d0d55b7581e896b3f0d] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending git bisect bad 9ba55cf7cfbfd12a7e914d0d55b7581e896b3f0d # bad: [c61b49c79e1c1d4bc0c2fdc053ef56e65759b5fd] Merge tag 'drm-fixes-v4.7- rc1' of git://people.freedesktop.org/~airlied/linux git bisect bad c61b49c79e1c1d4bc0c2fdc053ef56e65759b5fd # good: [dc03c0f9d12d85286d5e3623aa96d5c2a271b8e6] Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild git bisect good dc03c0f9d12d85286d5e3623aa96d5c2a271b8e6 # good: [e28e909c36bb5d6319953822d84df00fce7cbd18] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm git bisect good e28e909c36bb5d6319953822d84df00fce7cbd18 # good: [79b3c7164c18e2fe9e69b0dcc0d45bab7ae3c968] Merge branch 'drm-next-4.7' of git://people.freedesktop.org/~agd5f/linux into drm-next git bisect good 79b3c7164c18e2fe9e69b0dcc0d45bab7ae3c968 # bad: [1e8143db755f745a9842984de5e8b423f583aea2] Merge tag 'platform-drivers- x86-v4.7-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86 git bisect bad 1e8143db755f745a9842984de5e8b423f583aea2 # good: [afcedebc6a094224973534f43b396bbbf33fe44e] thinkpad_acpi: save kbdlight state on suspend and restore it on resume git bisect good afcedebc6a094224973534f43b396bbbf33fe44e # good: [2aac630429d986a43ac59525a4cff47a624dc58e] iommu/vt-d: change intel- iommu to use IOVA frame numbers git bisect good 2aac630429d986a43ac59525a4cff47a624dc58e # bad: [2566278551d3db875bc3bbfc41b42f2e80392108] Merge git:// git.infradead.org/intel-iommu git bisect bad 2566278551d3db875bc3bbfc41b42f2e80392108
