Output level: Verbose Reporting DDC data errors: false Trace groups active: none Force I2C slave address: true (ddc_open_display) No EDID for device on bus /dev/i2c-6 (ddc_open_display) No EDID for device on bus /dev/i2c-7 Invalid display I2C bus: /dev/i2c-3 Supports DDC: true I2C address 0x37 (DDC) present: true I2C address 0x50 (EDID) present: true /sys/bus/i2c/devices/i2c-3/name: DPDDC-A EDID synopsis: Mfg id: AUO Model: Unspecified Serial number: Unspecified Manufacture year: 2015 EDID version: 1.4 Product code: 0x226d (8813) Extra descriptor: B125HAN02.2 White x,y: 0.306, 0.327 Red x,y: 0.587, 0.350 Green x,y: 0.342, 0.585 Blue x,y: 0.154, 0.115 EDID hex dump: +0 +4 +8 +c 0 4 8 c +0000 00 ff ff ff ff ff ff 00 06 af 6d 22 00 00 00 00 ..........m".... +0010 34 19 01 04 a5 1c 10 78 02 6b a7 96 59 57 95 27 4......x.k..YW.' +0020 1d 4e 53 00 00 00 01 01 01 01 01 01 01 01 01 01 .NS............. +0030 01 01 01 01 01 01 14 37 80 b8 70 38 24 40 10 10 .......7..p8$@.. +0040 3e 00 14 9b 10 00 00 18 00 00 00 0f 00 00 00 00 >............... +0050 00 00 00 00 00 00 00 00 00 20 00 00 00 fe 00 41 ......... .....A +0060 55 4f 0a 20 20 20 20 20 20 20 20 20 00 00 00 fe UO. .... +0070 00 42 31 32 35 48 41 4e 30 32 2e 32 20 0a 00 a8 .B125HAN02.2 ... DDC communication failed Invalid display I2C bus: /dev/i2c-5 Supports DDC: false I2C address 0x37 (DDC) present: false I2C address 0x50 (EDID) present: true /sys/bus/i2c/devices/i2c-5/name: DPDDC-C EDID synopsis: Mfg id: DEL Model: DELL U2412M Serial number: Unspecified Manufacture year: 2015 EDID version: 1.4 Product code: 0xa07b (41083) Extra descriptor: Unspecified White x,y: 0.313, 0.329 Red x,y: 0.640, 0.330 Green x,y: 0.300, 0.600 Blue x,y: 0.150, 0.060 EDID hex dump: +0 +4 +8 +c 0 4 8 c +0000 00 ff ff ff ff ff ff 00 10 ac 7b a0 4c 56 4b 30 ..........{.LVK0 +0010 35 19 01 04 a5 34 20 78 2a ee 95 a3 54 4c 99 26 5....4 x*...TL.& +0020 0f 50 54 a1 08 00 81 40 81 80 a9 40 b3 00 d1 c0 .PT....@...@.... +0030 01 01 01 01 01 01 28 3c 80 a0 70 b0 23 40 30 20 ......(<..p.#@0 +0040 36 00 06 44 21 00 00 1a c8 73 00 a0 f0 b0 23 40 6..D!....s....#@ +0050 30 20 36 00 ff ff 00 00 00 1e 00 00 00 fc 00 44 0 6............D +0060 45 4c 4c 20 55 32 34 31 32 4d 0a 20 27 4a 00 98 ELL U2412M. 'J.. +0070 a1 00 2a 40 30 70 13 00 ff ff 00 00 00 1e 00 07 ..*@0p.......... DDC communication failed Invalid display I2C bus: /dev/i2c-6 Supports DDC: true I2C address 0x37 (DDC) present: true I2C address 0x50 (EDID) present: true /sys/bus/i2c/devices/i2c-6/name: DPMST DDC communication failed Invalid display I2C bus: /dev/i2c-7 Supports DDC: true I2C address 0x37 (DDC) present: true I2C address 0x50 (EDID) present: true /sys/bus/i2c/devices/i2c-7/name: DPMST DDC communication failed No active displays found Maximum Try Settings: Operation Type Current Default Write only exchange tries: 4 4 Write read exchange tries: 10 10 Multi-part exchange tries: 8 8 Retry statistics for ddc write only No tries attempted Retry statistics for ddc write/read Max tries allowed: 10 Successful attempts by number of tries required: 1: 0 2: 0 3: 0 4: 0 5: 0 6: 0 7: 0 8: 0 9: 0 10: 0 Total: 0 Failed due to max tries exceeded: 1 Failed due to fatal error: 0 Total attempts: 1 Retry statistics for multi-part exchange No tries attempted DDC Related Errors: Count Status Code Description 10 DDCRC_RESPONSE_ENVELOPE (-3002) invalid source address in reply packet 1 DDCRC_RETRIES (-3015) maximum retries exceeded (derived) 2 DDCRC_EDID (-3016) invalid EDID Total errors: 13 Sleep Strategy Stats: Total IO events: 101 IO error count: 13 Total sleep events: 21 Sleep Event type Count SE_WRITE_TO_READ 10 SE_POST_OPEN 1 SE_POST_WRITE 0 SE_POST_READ 10 Call Stats: Type Count Millisec ( Nanosec) write calls (IE_WRITE) 18 6 ( 6827269) read calls (IE_READ) 28 589 ( 589119360) open file calls (IE_OPEN) 13 58 ( 58571219) close file calls (IE_CLOSE) 11 0 ( 130704) other I/O calls (IE_OTHER) 31 0 ( 75101) Totals: 101 654 ( 654723653) Sleep Call Stats: Total sleep calls: 25 Requested sleep time milliseconds : 1250 Actual sleep milliseconds (nanosec): 1257 (1257059636) Elapsed milliseconds (nanoseconds): 1916 (1916627455)