Bug 217312
| Summary: | mt76x0u reporting wrong MAX_TX_POWER | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Michael (ZeroBeat) |
| Component: | network-wireless | Assignee: | drivers_network-wireless (drivers_network-wireless) |
| Status: | RESOLVED OBSOLETE | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 6.2.10 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
did this work correctly on earlier kernel versions? which ones? I guess it is not a regression. Going back to kernel 5.15.32 showing the same results. I suspect it has never worked. k, thx for checking and letting me know, than it's nothing for my todo list I fully agree. I guess the driver doesn't read the correct information from the device. Here is another one: ASUS AC51 ID 0b05:17d1 ASUSTek Computer, Inc. AC51 802.11a/b/g/n/ac Wireless Adapter [Mediatek MT7610U] same regulatory domain: $ iw list Frequencies: * 2412 MHz [1] (16.0 dBm) * 2417 MHz [2] (16.0 dBm) * 2422 MHz [3] (16.0 dBm) * 2427 MHz [4] (16.0 dBm) * 2432 MHz [5] (16.0 dBm) * 2437 MHz [6] (16.0 dBm) * 2442 MHz [7] (16.0 dBm) * 2447 MHz [8] (16.0 dBm) * 2452 MHz [9] (16.0 dBm) * 2457 MHz [10] (16.0 dBm) * 2462 MHz [11] (16.0 dBm) * 2467 MHz [12] (disabled) * 2472 MHz [13] (disabled) * 2484 MHz [14] (disabled) ... * 5180 MHz [36] (20.0 dBm) * 5200 MHz [40] (20.0 dBm) * 5220 MHz [44] (20.0 dBm) * 5240 MHz [48] (20.0 dBm) * 5260 MHz [52] (20.0 dBm) (radar detection) * 5280 MHz [56] (20.0 dBm) (radar detection) * 5300 MHz [60] (20.0 dBm) (radar detection) * 5320 MHz [64] (20.0 dBm) (radar detection) * 5500 MHz [100] (20.0 dBm) (radar detection) * 5520 MHz [104] (20.0 dBm) (radar detection) * 5540 MHz [108] (20.0 dBm) (radar detection) * 5560 MHz [112] (20.0 dBm) (radar detection) * 5580 MHz [116] (20.0 dBm) (radar detection) * 5600 MHz [120] (20.0 dBm) (radar detection) * 5620 MHz [124] (20.0 dBm) (radar detection) * 5640 MHz [128] (20.0 dBm) (radar detection) * 5660 MHz [132] (20.0 dBm) (radar detection) * 5680 MHz [136] (20.0 dBm) (radar detection) * 5700 MHz [140] (20.0 dBm) (radar detection) * 5720 MHz [144] (20.0 dBm) (radar detection) * 5745 MHz [149] (20.0 dBm) * 5765 MHz [153] (20.0 dBm) * 5785 MHz [157] (20.0 dBm) * 5805 MHz [161] (20.0 dBm) * 5825 MHz [165] (20.0 dBm) * 5845 MHz [169] (20.0 dBm) (no IR) * 5865 MHz [173] (20.0 dBm) (no IR) $ hcxdumptool -I wlp39s0f3u1u1u1 Requesting interface capabilities. This may take some time. Please be patient... interface information: phy idx hw-mac virtual-mac m ifname driver (protocol) --------------------------------------------------------------------------------------------- 1 4 0c9d92b486ca 0c9d92b486ca * wlp39s0f3u1u1u1 mt76x0u (NETLINK & WIRELESS EXTENSIONS) available frequencies: frequency [channel] tx-power of Regulatory Domain: US 2412 [ 1] 16.0 dBm 2417 [ 2] 16.0 dBm 2422 [ 3] 16.0 dBm 2427 [ 4] 16.0 dBm 2432 [ 5] 16.0 dBm 2437 [ 6] 16.0 dBm 2442 [ 7] 16.0 dBm 2447 [ 8] 16.0 dBm 2452 [ 9] 16.0 dBm 2457 [ 10] 16.0 dBm 2462 [ 11] 16.0 dBm 2467 [ 12] disabled 2472 [ 13] disabled 2484 [ 14] disabled 5180 [ 36] 20.0 dBm 5200 [ 40] 20.0 dBm 5220 [ 44] 20.0 dBm 5240 [ 48] 20.0 dBm 5260 [ 52] 20.0 dBm 5280 [ 56] 20.0 dBm 5300 [ 60] 20.0 dBm 5320 [ 64] 20.0 dBm 5500 [100] 20.0 dBm 5520 [104] 20.0 dBm 5540 [108] 20.0 dBm 5560 [112] 20.0 dBm 5580 [116] 20.0 dBm 5600 [120] 20.0 dBm 5620 [124] 20.0 dBm 5640 [128] 20.0 dBm 5660 [132] 20.0 dBm 5680 [136] 20.0 dBm 5700 [140] 20.0 dBm 5720 [144] 20.0 dBm 5745 [149] 20.0 dBm 5765 [153] 20.0 dBm 5785 [157] 20.0 dBm 5805 [161] 20.0 dBm 5825 [165] 20.0 dBm 5845 [169] 20.0 dBm 5865 [173] 20.0 dBm bye-bye |
mt76x0u reporting wrong MAX_TX_POWER on all frequencies: Test device: ALFA AWUS036ACHM $ lsusb Bus 002 Device 003: ID 0e8d:7610 MediaTek Inc. WiFi Wireless Regulatory Domain settings: $ iw reg get global country US: DFS-FCC (902 - 904 @ 2), (N/A, 30), (N/A) (904 - 920 @ 16), (N/A, 30), (N/A) (920 - 928 @ 8), (N/A, 30), (N/A) (2400 - 2472 @ 40), (N/A, 30), (N/A) (5150 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW (5250 - 5350 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW (5470 - 5730 @ 160), (N/A, 24), (0 ms), DFS (5730 - 5850 @ 80), (N/A, 30), (N/A), AUTO-BW (5850 - 5895 @ 40), (N/A, 27), (N/A), NO-OUTDOOR, AUTO-BW, PASSIVE-SCAN (5925 - 7125 @ 320), (N/A, 12), (N/A), NO-OUTDOOR, PASSIVE-SCAN (57240 - 71000 @ 2160), (N/A, 40), (N/A) TX power e.g. on 2.4GHZ expected 30 dBm: (2400 - 2472 @ 40), (N/A, 30), (N/A) TX power shown by iw $iw dev phy#1 Interface wlp5s0f4u2 ifindex 4 wdev 0x100000001 addr fe:6c:e7:0e:99:37 type managed txpower 3.00 dBm multicast TXQ: qsz-byt qsz-pkt flows drops marks overlmt hashcol tx-bytes tx-packets 0 0 0 0 0 0 0 00 in detail: $ iw list $ iw list Wiphy phy1 ... Band 1: ... Frequencies: * 2412 MHz [1] (3.0 dBm) * 2417 MHz [2] (3.0 dBm) * 2422 MHz [3] (3.0 dBm) * 2427 MHz [4] (3.0 dBm) * 2432 MHz [5] (3.0 dBm) * 2437 MHz [6] (3.0 dBm) * 2442 MHz [7] (3.0 dBm) * 2447 MHz [8] (3.0 dBm) * 2452 MHz [9] (3.0 dBm) * 2457 MHz [10] (3.0 dBm) * 2462 MHz [11] (3.0 dBm) * 2467 MHz [12] (disabled) * 2472 MHz [13] (disabled) * 2484 MHz [14] (disabled) ... Band 2: Frequencies: * 5180 MHz [36] (16.0 dBm) * 5200 MHz [40] (16.0 dBm) * 5220 MHz [44] (16.0 dBm) * 5240 MHz [48] (16.0 dBm) * 5260 MHz [52] (16.0 dBm) (radar detection) * 5280 MHz [56] (15.0 dBm) (radar detection) * 5300 MHz [60] (15.0 dBm) (radar detection) * 5320 MHz [64] (15.0 dBm) (radar detection) * 5500 MHz [100] (13.0 dBm) (radar detection) * 5520 MHz [104] (12.0 dBm) (radar detection) * 5540 MHz [108] (12.0 dBm) (radar detection) * 5560 MHz [112] (12.0 dBm) (radar detection) * 5580 MHz [116] (12.0 dBm) (radar detection) * 5600 MHz [120] (12.0 dBm) (radar detection) * 5620 MHz [124] (12.0 dBm) (radar detection) * 5640 MHz [128] (12.0 dBm) (radar detection) * 5660 MHz [132] (12.0 dBm) (radar detection) * 5680 MHz [136] (12.0 dBm) (radar detection) * 5700 MHz [140] (13.0 dBm) (radar detection) * 5720 MHz [144] (13.0 dBm) (radar detection) * 5745 MHz [149] (13.0 dBm) * 5765 MHz [153] (13.0 dBm) * 5785 MHz [157] (13.0 dBm) * 5805 MHz [161] (13.0 dBm) * 5825 MHz [165] (14.0 dBm) * 5845 MHz [169] (6.0 dBm) (no IR) * 5865 MHz [173] (6.0 dBm) (no IR) ... confirmed by hcxdumptool: $ hcxdumptool -I wlp5s0f4u2 Requesting interface capabilities. This may take some time. Please be patient... interface information: phy idx hw-mac virtual-mac m ifname driver (protocol) --------------------------------------------------------------------------------------------- 1 4 00c0cab10a87 fe6ce70e9937 * wlp5s0f4u2 mt76x0u (NETLINK & WIRELESS EXTENSIONS) available frequencies: frequency [channel] tx-power 2412 [ 1] 3.0 dBm 2417 [ 2] 3.0 dBm 2422 [ 3] 3.0 dBm 2427 [ 4] 3.0 dBm 2432 [ 5] 3.0 dBm 2437 [ 6] 3.0 dBm 2442 [ 7] 3.0 dBm 2447 [ 8] 3.0 dBm 2452 [ 9] 3.0 dBm 2457 [ 10] 3.0 dBm 2462 [ 11] 3.0 dBm 2467 [ 12] disabled 2472 [ 13] disabled 2484 [ 14] disabled 5180 [ 36] 16.0 dBm 5200 [ 40] 16.0 dBm 5220 [ 44] 16.0 dBm 5240 [ 48] 16.0 dBm 5260 [ 52] 16.0 dBm 5280 [ 56] 15.0 dBm 5300 [ 60] 15.0 dBm 5320 [ 64] 15.0 dBm 5500 [100] 13.0 dBm 5520 [104] 12.0 dBm 5540 [108] 12.0 dBm 5560 [112] 12.0 dBm 5580 [116] 12.0 dBm 5600 [120] 12.0 dBm 5620 [124] 12.0 dBm 5640 [128] 12.0 dBm 5660 [132] 12.0 dBm 5680 [136] 12.0 dBm 5700 [140] 13.0 dBm 5720 [144] 13.0 dBm 5745 [149] 13.0 dBm 5765 [153] 13.0 dBm 5785 [157] 13.0 dBm 5805 [161] 13.0 dBm 5825 [165] 14.0 dBm 5845 [169] 6.0 dBm 5865 [173] 6.0 dBm bye-bye iw and hcxdumptool get TX power values from NL80211. It is worth it to take a look at the reported values by NETLINK via Wireshark. Wireshark nlmon Generic Netlink Protocol, e.g. of 2.4 GHz frequency 2422MHz: expected: NL80211_FREQUENCY_ATTR_MAX_TX_POWER: (3000)== 30.0 dBm but Attribute Value: 0x0000012c (300) in detail: Attribute: NL80211_FREQUENCY_ATTR_FREQ Len: 8 Type: 0x0001, NL80211_FREQUENCY_ATTR_FREQ (1) 0... .... .... .... = Nested: False .0.. .... .... .... = Network byte order: False Attribute Type: NL80211_FREQUENCY_ATTR_FREQ (1) Attribute Value: 0x00000976 (2422) ... Type: 0x0006, NL80211_FREQUENCY_ATTR_MAX_TX_POWER (6) 0... .... .... .... = Nested: False .0.. .... .... .... = Network byte order: False Attribute Type: NL80211_FREQUENCY_ATTR_MAX_TX_POWER (6) Attribute: NL80211_FREQUENCY_ATTR_MAX_TX_POWER Len: 8 Type: 0x0006, NL80211_FREQUENCY_ATTR_MAX_TX_POWER (6) 0... .... .... .... = Nested: False .0.. .... .... .... = Network byte order: False Attribute Type: NL80211_FREQUENCY_ATTR_MAX_TX_POWER (6) Attribute Value: 0x0000012c (300)