On 08/24/2013 05:32 PM, Larry Lade wrote:
Hi,
I wanted to report an alarming issue running sensors-detect on my new
(Ubuntu 12.04 out of the box!) laptop.
sensors-detect revision 5984 (2011-07-10 21:22:53 +0200)
System:ASUSTeK COMPUTER INC. 1015E (laptop)
I take the default "YES" to all detections. The only thing that comes
up is "coretemp", until it tries to probe I2C/SMBus adapters.
Problem is most likely that sensors-detect tried to access an i2c chip
on one of the i915 i2c busses which programs lcd parameters.
Reading from its register space may have re-programmed it.
I am not the expert on this - Jean may be able to help.
Scanning of i2c busses on graphics cards is now disabled by default
in sensors-detect, but that version of sensors-detect does not ship
with Ubuntu 12.4.
Found unknown SMBus adapter 8086:1e22 at 0000:00:1f.3.
Sorry, no supported PCI bus adapters found
This adapter is supported with the i2c-i801 driver. It was already supported
with kernel version 3.2, so it should work for you. More recent versions
of sensors-detect detect it correctly.
Guenter
...
Next adapter: i915 gmbus panel (i2c-5)
Do you want to scan it? (YES/no/selectively):
Client found at address 0x4f
Probing for `National Semiconductor LM75'... No
Probing for `National Semiconductor LM75A'... No
Probing for `Dallas Semiconductor DS75'... No
Probing for `Dallas Semiconductor DS1621/DS1631'... No
Probing for `Maxim MAX6642'... No
Probing for `Texas Instruments TMP421'... No
Probing for `Texas Instruments TMP422'... No
Probing for `Maxim MAX6633/MAX6634/MAX6635'... No
Probing for `NXP/Philips SA56004'... No
Client found at address 0x50
Probing for `Analog Devices ADM1033'... No
Probing for `Analog Devices ADM1034'... No
Probing for `SPD EEPROM'... No
Probing for `EDID EEPROM'... Yes
(confidence 8, not a hardware monitoring chip)
Next adapter: i915 GPIOC (i2c-6)
Do you want to scan it? (YES/no/selectively):
Client found at address 0x4f
Probing for `National Semiconductor LM75'... No
Probing for `National Semiconductor LM75A'... No
Probing for `Dallas Semiconductor DS75'... No
Probing for `Dallas Semiconductor DS1621/DS1631'... No
Probing for `Maxim MAX6642'... No
Probing for `Texas Instruments TMP421'... No
Probing for `Texas Instruments TMP422'... No
Probing for `Maxim MAX6633/MAX6634/MAX6635'... No
Probing for `NXP/Philips SA56004'... No
Client found at address 0x50
Probing for `Analog Devices ADM1033'... No
Probing for `Analog Devices ADM1034'... No
Probing for `SPD EEPROM'... No
Probing for `EDID EEPROM'... Yes
(confidence 8, not a hardware monitoring chip)
At some point during one of these scans, there's a flash and SOMETHING
happens to the built-in LCD screen. I noticed it's as though the gamma
was all out of whack, the colors were washed out, and dithering
becomes notable everywhere. (Bad even for an 18-bit LCD.) Display
looks fine on an LCD connected by VGA port.
This change survived the re-install of the operating system.
I was getting desperate, thinking I had just zapped something and
voided the hardware, so I ran sensors-detect again. Probing either of
the two above adapters (they both seem to reference the same bit of
hardware) seemed to toggle something, restoring or corrupting the
screen quality.
Or at least it did. It seems to have it stuck in "ugly" mode again,
and nothing on the display toggles any more when I run sensors-detect
any more. Is anyone able to help?
The LCD seems to be an AUO B101XTN01 (as reported by the EDID)
http://www.panelook.com/B101XTN01.0_AUO_10.1_LCM_parameter_19387.html
lm-sensors 1:3.3.1-2ubuntu1
linux 3.2.0-52-generic #78-Ubuntu SMP x86_64
$ sudo get-edid | parse-edid:
# EDID version 1 revision 4
Section "Monitor"
# Block type: 2:0 3:f
# Block type: 2:0 3:fe
# Block type: 2:0 3:fe
Identifier "AUO:dc11"
VendorName "AUO"
ModelName "AUO:dc11"
# Block type: 2:0 3:f
# Block type: 2:0 3:fe
# Block type: 2:0 3:fe
# DPMS capabilities: Active off:no Suspend:no Standby:no
Mode "1366x768" # vfreq 60.041Hz, hfreq 47.913kHz
DotClock 76.660000
HTimings 1366 1404 1426 1600
VTimings 768 771 777 798
Flags "-HSync" "-VSync"
EndMode
# Block type: 2:0 3:f
# Block type: 2:0 3:fe
# Block type: 2:0 3:fe
EndSection
$ sudo i2cdetect 5
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-5.
I will probe address range 0x03-0x77.
Continue? [Y/n]
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 4f
50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
$ sudo i2cdump 5 0x4f
No size specified (using byte-data access)
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-5, address 0x4f, mode byte
Continue? [Y/n]
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
10: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
20: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
30: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
40: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
50: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
60: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
70: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
80: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
90: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
a0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
b0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
c0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
d0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
e0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
f0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
$ sudo i2cdump 5 0x50
No size specified (using byte-data access)
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-5, address 0x50, mode byte
Continue? [Y/n]
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 00 ff ff ff ff ff ff 00 06 af dc 11 00 00 00 00 ........????....
10: 00 16 01 04 90 16 0d 78 02 bb f5 94 55 54 90 27 .??????x????UT?'
20: 23 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01 #PT...??????????
30: 01 01 01 01 01 01 f2 1d 56 ea 50 00 1e 30 26 16 ????????V?P.?0&?
40: 36 00 de 7d 00 00 00 18 00 00 00 0f 00 00 00 00 6.?}...?...?....
50: 00 00 00 00 00 00 00 00 00 20 00 00 00 fe 00 41 ......... ...?.A
60: 55 4f 0a 20 20 20 20 20 20 20 20 20 00 00 00 fe UO? ...?
70: 00 42 31 30 31 58 54 4e 30 31 2e 31 20 0a 00 dd .B101XTN01.1 ?.?
80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
90: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
$ lsmod
Module Size Used by
pci_stub 12622 1
vboxpci 23237 0
vboxnetadp 13382 0
uvcvideo 72627 0
vboxnetflt 23478 0
videodev 98259 1 uvcvideo
vboxdrv 287130 3 vboxpci,vboxnetadp,vboxnetflt
v4l2_compat_ioctl32 17128 1 videodev
snd_hda_codec_hdmi 36727 1
snd_hda_codec_realtek 78471 1
bcma 26696 0
arc4 12529 2
joydev 17693 0
dm_multipath 23275 0
snd_hda_intel 39382 3
snd_hda_codec 140267 3
snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 17764 1 snd_hda_codec
snd_pcm 97275 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi 13324 0
snd_rawmidi 30748 1 snd_seq_midi
snd_seq_midi_event 14899 1 snd_seq_midi
snd_seq 61929 2 snd_seq_midi,snd_seq_midi_event
snd_timer 29990 2 snd_pcm,snd_seq
snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq
snd 79041 16
snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
psmouse 97519 0
brcmsmac 570930 0
mac80211 506862 1 brcmsmac
alx 81350 0
serio_raw 13211 0
i915 461962 3
compat 13447 1 alx
soundcore 15091 1 snd
brcmutil 15139 1 brcmsmac
cfg80211 205774 2 brcmsmac,mac80211
crc8 12893 1 brcmsmac
cordic 12574 1 brcmsmac
drm_kms_helper 46978 1 i915
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
drm 241971 4 i915,drm_kms_helper
mei 41616 0
i2c_algo_bit 13423 1 i915
rfcomm 47604 0
bnep 18281 2
parport_pc 32866 0
bluetooth 180113 10 rfcomm,bnep
ppdev 17113 0
video 19651 1 i915
binfmt_misc 17540 1
nls_iso8859_1 12713 2
nls_cp437 16991 2
mac_hid 13253 0
vfat 17585 2
fat 61512 1 vfat
asus_nb_wmi 16990 0
asus_wmi 24392 1 asus_nb_wmi
wmi 19256 1 asus_wmi
sparse_keymap 13890 1 asus_wmi
lp 17799 0
parport 46562 3 parport_pc,ppdev,lp
usb_storage 49198 1
dm_raid45 78155 0
xor 12894 1 dm_raid45
dm_mirror 22203 0
dm_region_hash 20961 1 dm_mirror
dm_log 18564 3 dm_raid45,dm_mirror,dm_region_hash
dmesg currently dumping this during probe of 0x4f:
[ 783.847244] i2c i2c-6: sendbytes: NAK bailout.
[ 783.848321] i2c i2c-6: sendbytes: NAK bailout.
[ 783.849399] i2c i2c-6: sendbytes: NAK bailout.
[ 783.850497] i2c i2c-6: sendbytes: NAK bailout.
[ 783.851666] i2c i2c-6: sendbytes: NAK bailout.
[ 783.852746] i2c i2c-6: sendbytes: NAK bailout.
[ 783.853827] i2c i2c-6: sendbytes: NAK bailout.
[ 783.854908] i2c i2c-6: sendbytes: NAK bailout.
[ 783.855988] i2c i2c-6: sendbytes: NAK bailout.
[ 783.857065] i2c i2c-6: sendbytes: NAK bailout.
[ 783.858150] i2c i2c-6: sendbytes: NAK bailout.
[ 783.859230] i2c i2c-6: sendbytes: NAK bailout.
[ 783.860306] i2c i2c-6: sendbytes: NAK bailout.
[ 783.861383] i2c i2c-6: sendbytes: NAK bailout.
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