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1) Linux Mint 17 Qiana (MATE, x86_64)
2) Having linux-firmware 1.127.5 or 1.127.6 installed on my Sony Vaio Pro 13 (
SVP1322V8EBI product name )
3) It causes loosy network, ping to wireless access point is unstable, it jumps
from 1.8ms up to 250 and even more than 2000ms from time to time (every 3-5
minutes), repeatedly dropping packets too (no matter pinging directly a router
or an external site), consistently high packet loss (about 33%), impossible to
work over ssh as it takes about 10-15 seconds to type a command almost every
3rd or 5th minute, repeatedly disconnects from access point due to a limited
range.
4) Normal and stable network connection over WiFi -- without lags, packet loss,
disruptions, limited range, etc ...
5) Always with linux-firmware 1.127.5 or 1.127.6
--- Notes ---
And there is absoultely no problem when I downgraded to linux-firmware=1.127.4
, wireless connection perfectly works, no lags, no disruptions, no packet loss,
just works as expected.
My Wireless card on Sony Vaio Pro 13:
01:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b)
Subsystem: Intel Corporation Dual Band Wireless-AC 7260
Flags: bus master, fast devsel, latency 0, IRQ 60
Memory at f7200000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [40] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 5c-51-4f-ff-ff-XX-XX-XX
(NOTE: I changed last 3 bytes to XX)
Capabilities: [14c] Latency Tolerance Reporting
Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014
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Kernel driver in use: iwlwifi
Thanks for fixing this problem in advnace, and if you need more outputs
from my side, please let me know.
** Affects: linux-firmware (Ubuntu)
Importance: Undecided
Status: New
** Tags: 7260 bug disconnect disruption iwlwifi network sony vaio wifi wireless
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linux-firmware 1.127.5, 1.127.6 causes instable network connection (likely due
to iwlwifi-7260-8.ucode)
https://bugs.launchpad.net/bugs/1371425
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