Blank Screen (Not Brightness Problem)

[incetardis]

I hope someone can help with this...

I bought 2 pandoras, 1 for me and another for a friend. They both worked fine until 1 decided to not boot into either GUI.

I initially thought it was the brightness problem detailed in another thread but having tried everything suggested there the problem still exists.

As soon as the battery is inserted the pandora turns on and the logo shows up, then moves onto the loading screen saying powered by angstrom, release 1 - "zaxxon" etc. but the bar only loads halfway then goes to a blank screen. The power light is still on but anything I press doesn't do anything, including moving the power switch. I also found the thread suggesting re-flashing the firmware from an SD card by holding R and I'm able to access this menu but when I go to "boot from SD1:1" it eventually fails

The following code is the update.log file so I'm hoping someone that can make sense of it can help me out... Cheers!

 sector 37047
[   29.410766] end_request: I/O error, dev mmcblk0, sector 37055
[   29.411926] end_request: I/O error, dev mmcblk0, sector 37063
[   29.413024] end_request: I/O error, dev mmcblk0, sector 37071
[   29.414001] end_request: I/O error, dev mmcblk0, sector 37079
[   29.414978] end_request: I/O error, dev mmcblk0, sector 37087
[   29.415954] end_request: I/O error, dev mmcblk0, sector 37095
[   29.452880] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   29.453247] mmcblk0: error -84 transferring data
[   29.454406] end_request: I/O error, dev mmcblk0, sector 37487
[   29.455627] end_request: I/O error, dev mmcblk0, sector 37495
[   29.456817] end_request: I/O error, dev mmcblk0, sector 37503
[   29.458007] end_request: I/O error, dev mmcblk0, sector 37511
[   29.459197] end_request: I/O error, dev mmcblk0, sector 37519
[   29.460357] end_request: I/O error, dev mmcblk0, sector 37527
[   29.461547] end_request: I/O error, dev mmcblk0, sector 37535
[   29.462738] end_request: I/O error, dev mmcblk0, sector 37543
[   29.463928] end_request: I/O error, dev mmcblk0, sector 37551
[   29.465118] end_request: I/O error, dev mmcblk0, sector 37559
[   29.466278] end_request: I/O error, dev mmcblk0, sector 37567
[   29.467468] end_request: I/O error, dev mmcblk0, sector 37575
[   29.468536] end_request: I/O error, dev mmcblk0, sector 37583
[   29.469512] end_request: I/O error, dev mmcblk0, sector 37591
[   29.470489] end_request: I/O error, dev mmcblk0, sector 37599
[   29.471496] end_request: I/O error, dev mmcblk0, sector 37607
[   29.473388] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   29.473724] mmcblk0: error -84 transferring data
[   29.474853] end_request: I/O error, dev mmcblk0, sector 37615
[   29.476043] end_request: I/O error, dev mmcblk0, sector 37623
[   29.477233] end_request: I/O error, dev mmcblk0, sector 37631
[   29.478393] end_request: I/O error, dev mmcblk0, sector 37639
[   29.479583] end_request: I/O error, dev mmcblk0, sector 37647
[   29.480743] end_request: I/O error, dev mmcblk0, sector 37655
[   29.481933] end_request: I/O error, dev mmcblk0, sector 37663
[   29.483093] end_request: I/O error, dev mmcblk0, sector 37671
[   29.484283] end_request: I/O error, dev mmcblk0, sector 37679
[   29.485473] end_request: I/O error, dev mmcblk0, sector 37687
[   29.486633] end_request: I/O error, dev mmcblk0, sector 37695
[   29.487792] end_request: I/O error, dev mmcblk0, sector 37703
[   29.488861] end_request: I/O error, dev mmcblk0, sector 37711
[   29.489868] end_request: I/O error, dev mmcblk0, sector 37719
[   29.490844] end_request: I/O error, dev mmcblk0, sector 37727
[   29.491821] end_request: I/O error, dev mmcblk0, sector 37735
[   29.662109] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   29.662475] mmcblk0: error -84 transferring data
[   29.663665] end_request: I/O error, dev mmcblk0, sector 41583
[   29.664886] end_request: I/O error, dev mmcblk0, sector 41591
[   29.666076] end_request: I/O error, dev mmcblk0, sector 41599
[   29.667236] end_request: I/O error, dev mmcblk0, sector 41607
[   29.668426] end_request: I/O error, dev mmcblk0, sector 41615
[   29.669586] end_request: I/O error, dev mmcblk0, sector 41623
[   29.670776] end_request: I/O error, dev mmcblk0, sector 41631
[   29.671936] end_request: I/O error, dev mmcblk0, sector 41639
[   29.673126] end_request: I/O error, dev mmcblk0, sector 41647
[   29.674316] end_request: I/O error, dev mmcblk0, sector 41655
[   29.675476] end_request: I/O error, dev mmcblk0, sector 41663
[   29.676666] end_request: I/O error, dev mmcblk0, sector 41671
[   29.677734] end_request: I/O error, dev mmcblk0, sector 41679
[   29.678710] end_request: I/O error, dev mmcblk0, sector 41687
[   29.679687] end_request: I/O error, dev mmcblk0, sector 41695
[   29.680664] end_request: I/O error, dev mmcblk0, sector 41703
[   29.690795] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   29.691131] mmcblk0: error -84 transferring data
[   29.692260] end_request: I/O error, dev mmcblk0, sector 41967
[   29.693450] end_request: I/O error, dev mmcblk0, sector 41975
[   29.694641] end_request: I/O error, dev mmcblk0, sector 41983
[   29.695831] end_request: I/O error, dev mmcblk0, sector 41991
[   29.697021] end_request: I/O error, dev mmcblk0, sector 41999
[   29.698181] end_request: I/O error, dev mmcblk0, sector 42007
[   29.699371] end_request: I/O error, dev mmcblk0, sector 42015
[   29.700561] end_request: I/O error, dev mmcblk0, sector 42023
[   29.701751] end_request: I/O error, dev mmcblk0, sector 42031
[   29.702941] end_request: I/O error, dev mmcblk0, sector 42039
[   29.704101] end_request: I/O error, dev mmcblk0, sector 42047
[   29.705291] end_request: I/O error, dev mmcblk0, sector 42055
[   29.706359] end_request: I/O error, dev mmcblk0, sector 42063
[   29.707366] end_request: I/O error, dev mmcblk0, sector 42071
[   29.708343] end_request: I/O error, dev mmcblk0, sector 42079
[   29.709350] end_request: I/O error, dev mmcblk0, sector 42087
[   29.732147] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   29.732513] mmcblk0: error -84 transferring data
[   29.733673] end_request: I/O error, dev mmcblk0, sector 42095
[   29.734893] end_request: I/O error, dev mmcblk0, sector 42103
[   29.736083] end_request: I/O error, dev mmcblk0, sector 42111
[   29.737274] end_request: I/O error, dev mmcblk0, sector 42119
[   29.738433] end_request: I/O error, dev mmcblk0, sector 42127
[   29.739624] end_request: I/O error, dev mmcblk0, sector 42135
[   29.740814] end_request: I/O error, dev mmcblk0, sector 42143
[   29.742004] end_request: I/O error, dev mmcblk0, sector 42151
[   29.743194] end_request: I/O error, dev mmcblk0, sector 42159
[   29.744384] end_request: I/O error, dev mmcblk0, sector 42167
[   29.745574] end_request: I/O error, dev mmcblk0, sector 42175
[   29.746734] end_request: I/O error, dev mmcblk0, sector 42183
[   29.747833] end_request: I/O error, dev mmcblk0, sector 42191
[   29.748809] end_request: I/O error, dev mmcblk0, sector 42199
[   29.749786] end_request: I/O error, dev mmcblk0, sector 42207
[   29.750762] end_request: I/O error, dev mmcblk0, sector 42215
[   29.834686] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   29.837921] mmcblk0: error -84 transferring data
[   29.839111] end_request: I/O error, dev mmcblk0, sector 43503
[   29.840362] end_request: I/O error, dev mmcblk0, sector 43511
[   29.841552] end_request: I/O error, dev mmcblk0, sector 43519
[   29.842712] end_request: I/O error, dev mmcblk0, sector 43527
[   29.843902] end_request: I/O error, dev mmcblk0, sector 43535
[   29.845062] end_request: I/O error, dev mmcblk0, sector 43543
[   29.846252] end_request: I/O error, dev mmcblk0, sector 43551
[   29.847442] end_request: I/O error, dev mmcblk0, sector 43559
[   29.848632] end_request: I/O error, dev mmcblk0, sector 43567
[   29.849792] end_request: I/O error, dev mmcblk0, sector 43575
[   29.850982] end_request: I/O error, dev mmcblk0, sector 43583
[   29.852142] end_request: I/O error, dev mmcblk0, sector 43591
[   29.853210] end_request: I/O error, dev mmcblk0, sector 43599
[   29.854217] end_request: I/O error, dev mmcblk0, sector 43607
[   29.855194] end_request: I/O error, dev mmcblk0, sector 43615
[   29.856170] end_request: I/O error, dev mmcblk0, sector 43623
[   29.953216] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   29.953552] mmcblk0: error -84 transferring data
[   29.954742] end_request: I/O error, dev mmcblk0, sector 45807
[   29.955963] end_request: I/O error, dev mmcblk0, sector 45815
[   29.957153] end_request: I/O error, dev mmcblk0, sector 45823
[   29.958343] end_request: I/O error, dev mmcblk0, sector 45831
[   29.959503] end_request: I/O error, dev mmcblk0, sector 45839
[   29.960693] end_request: I/O error, dev mmcblk0, sector 45847
[   29.961853] end_request: I/O error, dev mmcblk0, sector 45855
[   29.963043] end_request: I/O error, dev mmcblk0, sector 45863
[   29.964233] end_request: I/O error, dev mmcblk0, sector 45871
[   29.965423] end_request: I/O error, dev mmcblk0, sector 45879
[   29.966583] end_request: I/O error, dev mmcblk0, sector 45887
[   29.967742] end_request: I/O error, dev mmcblk0, sector 45895
[   29.968811] end_request: I/O error, dev mmcblk0, sector 45903
[   29.969818] end_request: I/O error, dev mmcblk0, sector 45911
[   29.970794] end_request: I/O error, dev mmcblk0, sector 45919
[   29.971771] end_request: I/O error, dev mmcblk0, sector 45927
[   30.013793] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   30.014587] mmcblk0: error -84 transferring data
[   30.015777] end_request: I/O error, dev mmcblk0, sector 46447
[   30.017028] end_request: I/O error, dev mmcblk0, sector 46455
[   30.018218] end_request: I/O error, dev mmcblk0, sector 46463
[   30.019378] end_request: I/O error, dev mmcblk0, sector 46471
[   30.020568] end_request: I/O error, dev mmcblk0, sector 46479
[   30.021759] end_request: I/O error, dev mmcblk0, sector 46487
[   30.022949] end_request: I/O error, dev mmcblk0, sector 46495
[   30.024139] end_request: I/O error, dev mmcblk0, sector 46503
[   30.025329] end_request: I/O error, dev mmcblk0, sector 46511
[   30.026519] end_request: I/O error, dev mmcblk0, sector 46519
[   30.027679] end_request: I/O error, dev mmcblk0, sector 46527
[   30.028869] end_request: I/O error, dev mmcblk0, sector 46535
[   30.029968] end_request: I/O error, dev mmcblk0, sector 46543
[   30.030944] end_request: I/O error, dev mmcblk0, sector 46551
[   30.031921] end_request: I/O error, dev mmcblk0, sector 46559
[   30.032928] end_request: I/O error, dev mmcblk0, sector 46567
[   30.036193] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   30.036529] mmcblk0: error -84 transferring data
[   30.037658] end_request: I/O error, dev mmcblk0, sector 46575
[   30.038879] end_request: I/O error, dev mmcblk0, sector 46583
[   30.040069] end_request: I/O error, dev mmcblk0, sector 46591
[   30.041229] end_request: I/O error, dev mmcblk0, sector 46599
[   30.042419] end_request: I/O error, dev mmcblk0, sector 46607
[   30.043609] end_request: I/O error, dev mmcblk0, sector 46615
[   30.044799] end_request: I/O error, dev mmcblk0, sector 46623
[   30.045959] end_request: I/O error, dev mmcblk0, sector 46631
[   30.047149] end_request: I/O error, dev mmcblk0, sector 46639
[   30.048339] end_request: I/O error, dev mmcblk0, sector 46647
[   30.049499] end_request: I/O error, dev mmcblk0, sector 46655
[   30.050689] end_request: I/O error, dev mmcblk0, sector 46663
[   30.051757] end_request: I/O error, dev mmcblk0, sector 46671
[   30.052734] end_request: I/O error, dev mmcblk0, sector 46679
[   30.053710] end_request: I/O error, dev mmcblk0, sector 46687
[   30.054687] end_request: I/O error, dev mmcblk0, sector 46695
[   30.138824] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   30.144165] mmcblk0: error -84 transferring data
[   30.145355] end_request: I/O error, dev mmcblk0, sector 48111
[   30.146606] end_request: I/O error, dev mmcblk0, sector 48119
[   30.147766] end_request: I/O error, dev mmcblk0, sector 48127
[   30.148956] end_request: I/O error, dev mmcblk0, sector 48135
[   30.150115] end_request: I/O error, dev mmcblk0, sector 48143
[   30.151275] end_request: I/O error, dev mmcblk0, sector 48151
[   30.152465] end_request: I/O error, dev mmcblk0, sector 48159
[   30.153625] end_request: I/O error, dev mmcblk0, sector 48167
[   30.154815] end_request: I/O error, dev mmcblk0, sector 48175
[   30.155975] end_request: I/O error, dev mmcblk0, sector 48183
[   30.157135] end_request: I/O error, dev mmcblk0, sector 48191
[   30.158325] end_request: I/O error, dev mmcblk0, sector 48199
[   30.159393] end_request: I/O error, dev mmcblk0, sector 48207
[   30.160369] end_request: I/O error, dev mmcblk0, sector 48215
[   30.161346] end_request: I/O error, dev mmcblk0, sector 48223
[   30.162322] end_request: I/O error, dev mmcblk0, sector 48231
[   30.217620] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   30.217987] mmcblk0: error -84 transferring data
[   30.219177] end_request: I/O error, dev mmcblk0, sector 49263
[   30.220397] end_request: I/O error, dev mmcblk0, sector 49271
[   30.221588] end_request: I/O error, dev mmcblk0, sector 49279
[   30.222747] end_request: I/O error, dev mmcblk0, sector 49287
[   30.223937] end_request: I/O error, dev mmcblk0, sector 49295
[   30.225128] end_request: I/O error, dev mmcblk0, sector 49303
[   30.226287] end_request: I/O error, dev mmcblk0, sector 49311
[   30.227478] end_request: I/O error, dev mmcblk0, sector 49319
[   30.228668] end_request: I/O error, dev mmcblk0, sector 49327
[   30.229858] end_request: I/O error, dev mmcblk0, sector 49335
[   30.231048] end_request: I/O error, dev mmcblk0, sector 49343
[   30.232238] end_request: I/O error, dev mmcblk0, sector 49351
[   30.233306] end_request: I/O error, dev mmcblk0, sector 49359
[   30.234313] end_request: I/O error, dev mmcblk0, sector 49367
[   30.235290] end_request: I/O error, dev mmcblk0, sector 49375
[   30.236297] end_request: I/O error, dev mmcblk0, sector 49383
[   30.347839] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   30.348175] mmcblk0: error -84 transferring data
[   30.349456] end_request: I/O error, dev mmcblk0, sector 51823
[   30.350677] end_request: I/O error, dev mmcblk0, sector 51831
[   30.351867] end_request: I/O error, dev mmcblk0, sector 51839
[   30.353057] end_request: I/O error, dev mmcblk0, sector 51847
[   30.354248] end_request: I/O error, dev mmcblk0, sector 51855
[   30.355438] end_request: I/O error, dev mmcblk0, sector 51863
[   30.356628] end_request: I/O error, dev mmcblk0, sector 51871
[   30.357818] end_request: I/O error, dev mmcblk0, sector 51879
[   30.359008] end_request: I/O error, dev mmcblk0, sector 51887
[   30.360198] end_request: I/O error, dev mmcblk0, sector 51895
[   30.361389] end_request: I/O error, dev mmcblk0, sector 51903
[   30.362579] end_request: I/O error, dev mmcblk0, sector 51911
[   30.363677] end_request: I/O error, dev mmcblk0, sector 51919
[   30.364654] end_request: I/O error, dev mmcblk0, sector 51927
[   30.365631] end_request: I/O error, dev mmcblk0, sector 51935
[   30.366638] end_request: I/O error, dev mmcblk0, sector 51943
[   30.479644] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   30.480010] mmcblk0: error -84 transferring data
[   30.481201] end_request: I/O error, dev mmcblk0, sector 54511
[   30.482452] end_request: I/O error, dev mmcblk0, sector 54519
[   30.483642] end_request: I/O error, dev mmcblk0, sector 54527
[   30.484802] end_request: I/O error, dev mmcblk0, sector 54535
[   30.485992] end_request: I/O error, dev mmcblk0, sector 54543
[   30.487152] end_request: I/O error, dev mmcblk0, sector 54551
[   30.488342] end_request: I/O error, dev mmcblk0, sector 54559
[   30.489501] end_request: I/O error, dev mmcblk0, sector 54567
[   30.490692] end_request: I/O error, dev mmcblk0, sector 54575
[   30.491882] end_request: I/O error, dev mmcblk0, sector 54583
[   30.493072] end_request: I/O error, dev mmcblk0, sector 54591
[   30.494232] end_request: I/O error, dev mmcblk0, sector 54599
[   30.495330] end_request: I/O error, dev mmcblk0, sector 54607
[   30.496307] end_request: I/O error, dev mmcblk0, sector 54615
[   30.497283] end_request: I/O error, dev mmcblk0, sector 54623
[   30.498260] end_request: I/O error, dev mmcblk0, sector 54631
[   30.518524] mmci-omap mmci-omap.0: MMC IRQ 0x208000 : ERRI DCRC
[   30.518615] mmcblk0: error -84 transferring data
[   30.519744] end_request: I/O error, dev mmcblk0, sector 54631
----------
u-boot.bin
uImage
mount: mounting /dev/mmcblk0p2 on /mnt/mmcblk0p2 failed: No such file or directory
1+0 records in
1+0 records out
335836 bytes (328.0KB) copied, 0.154999 seconds, 2.1MB/s
u-boot.bin already flashed, skipped.
UBI device number 0, total 80 LEBs (10321920 bytes, 9.8 MiB), available 0 LEBs (0 bytes), LEB size 129024 bytes (126.0 KiB)
uImage already flashed, skipped.
Calculating checksum, this might take a few minutes..
INCORRECT

 

[WizardStan]

The checksum is incorrect. Something in your firmware has become corrupted. You'll need to reflash to factory default and try again. The instructions are... here... somewhere. I'll find them, just a second.

edit: wait, you say you did reflash. But the checksum is still incorrect.
That's not right. Try reflashing a second time, and if that doesn't work then it's possible the NAND itself is actually bad, it just took a few reboots before it died.

 

[slaeshjag]

Your SD-card is most likely bad, as you get tonnes of read errors from it.

 

[mvickers03]

I had this exact same problem when leaving the Pandora on all day and the lid closed, I think it ran out of juice with the screen off. The Zaxxon loading bar went just before halfway then the screen sudenly shot to a black screen (Backlight was still lit). Removing and inserting the SD cards made the LEDS blink for a few seconds.

I flashed the firmware and it boots OK again now

Forfot to say, I did try FN and brightness up

 

[incetardis]

Thanks for the quick replies!

I tried using another SD card and voila! I feel like a bit of an eejit... I/O error is pretty obvious even for a non-coder!

I had used the original SD for ages with no problems so didn't even think about that being the problem.

Cheers guys!

 

[mvickers03]

Glad it's working again, I nearly shat myself at first

 

[incetardis]

Join the club!! I thought I shat a brick...ed pandora

 

[mvickers03]

Thats my worst nightmare! :blink:

 

[nikkopt]

Thanks for the quick replies!

I tried using another SD card and voila! I feel like a bit of an eejit... I/O error is pretty obvious even for a non-coder!

I had used the original SD for ages with no problems so didn't even think about that being the problem.

Cheers guys!

Try formatting it with the SD format tool (panasonic format tool), here then do some read/write tests.. it might bring it back to life..

 

[EvilDragon]

Yep, that Panasonic SD Formatter works wonders

A Pandora with a broken SD Card can hang in boot-up, since it tries to mount it. No need to reflash, though, just remove the SD Card while booting

 

[aliking]

Just had this myself, and it scared the crap out of me.

I have a new technique to add to the arsenal against this. So I realized that the reason that the brightness buttons weren't working was that I was at the login screen, not actually in xfce yet.

Here's what you do:

1. Reset
2. Wait until everything stops blinking
3. If you have it set to default to your username, press Enter ONCE, if not, type your username and press Enter
4. wait a seccond
5. Type your password and hit Enter
6. wait
7. Fn + Brightness Up.....fingers crossed

Hope that helps some people not have to re-flash...

 

[EvilDragon]

Aaaand this will be fixed in Hotfix 2 (hopefully coming Monday / Tuesday)