| Summary: | ath9k: low throughput, disconnects | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Stefan Assmann <sassmann> | ||||
| Component: | kernel | Assignee: | John W. Linville <linville> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 15 | CC: | gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, sgruszka | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2011-05-02 18:47:10 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Attachments: |
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Stefan, could you try the patch Hauke posted in the linked kernel.org bugzilla? John, I tried the patch you mentioned and speeds are back to normal. :-) However I noticed that once in a while transfer stalls for a moment and I found the following in dmesg [ 114.821716] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x42000020 [ 114.821731] ath: Could not stop RX, we could be confusing the DMA engine when we start RX up [ 114.834213] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x42000020 is the patch going to be included in F15? Just sent email asking for the corresponding commit to be added to stable series for 2.6.38. *** This bug has been marked as a duplicate of bug 698978 *** |
Created attachment 494512 [details] dmesg.txt Description of problem: With F15 alpha and beta I see very low performance with my atheros wireless device. Throughput is often below 10kB/s and the network disconnects often. Even if the netbook is placed right next to the AP. After disabling power managment with "iwconfig wlan0 power off" things improved a little. Connection still gets reset every few minutes but average throughput is about 100kB/s now. 01:00.0 Network controller [0280]: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) [168c:002a] (rev 01) Version-Release number of selected component (if applicable): kernel-PAE-2.6.38.2-9.fc15.i686 How reproducible: always