Fujitsu U7311 Bad Experience
- Onboard LAN is an i219-LM 8086:15fb rev 20 chip. For some utterly stupid reason it does just speeds around 10 Mbit, despite the link having been succesfully negotiated at 1000 Mbit and having turned off all the classic problem-makers like GSO, TSO, GRO, etc. The i219-LM 8086:15d7 rev 21 from the earlier U728 notebook performs much better.
- The touchpad is nonfunctional under Linux. The hardware device does not show up. (Later found in June 2021: i2c-hid.ko/i2c-hid-acpi.ko needs manual loading.)
- The power consumption is kind of abysmal, with ~520 mA being drawn in idle.
- The graphics hardware crashes. Stupid Iris Xe shit.
[ 244.638316] i915 0000:00:02.0: [drm] GPU HANG: ecode 12:1:859fbffd, in X [3419]
[ 244.639340] i915 0000:00:02.0: [drm] Resetting rcs0 for stopped heartbeat on rcs0
[ 244.640044] i915 0000:00:02.0: [drm] *ERROR* rcs0 reset request timed out: {request: 00000001, RESET_CTL: 00000001}
[ 244.640083] i915 0000:00:02.0: [drm] Resetting chip for stopped heartbeat on rcs0
[ 244.743088] i915 0000:00:02.0: [drm] *ERROR* rcs0 reset request timed out: {request: 00000001, RESET_CTL: 00000001} - Can't install Windows 10 because it has no drivers for the NVMe drive (wtf?), a Samsung 144d:a809 (PCI VID:PID). Linux is fine, though, so yo, wtf everyone in the QA department (because normally, it seems to be the other way around).
Posted 2021-05-10 16:05 / Tags: Hardware. / link
Notes on photo sphere/panoramic EXIF metadata
- Google's EXIF/XMP metadata tag specification for panoramic images
- Panorama images with sky are to have a negative value for the CroppedAreaTopPixels tag. (The panoramic viewer of Facebook ignores the value altogether, though, and assumes the horizon in the middle of the picture.)
- If a camera or software normally produces panoramic images with cylindrical projection, then doing a vertical capture actually produces a transverse cylindrical image. There is no standardized value for the EXIF ProjectionType field to cover this. (One option is to reproject them to equirectangular — which, again, is not very well supported.)
- Facebook's document on what tags to set
- The Facebook web interface insists that FullPanoHeightPixels be half the size of FullPanoWidthPixels. Else you get “no new photos were uploaded”.
Posted 2024-04-25 22:04 / Tags: Photo. / link