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Black screen during boot with fedora 25 beta on HPL1925 Monitor - EDID Issue #64

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aworan opened this issue Oct 19, 2016 · 3 comments
Closed

Black screen during boot with fedora 25 beta on HPL1925 Monitor - EDID Issue #64

aworan opened this issue Oct 19, 2016 · 3 comments

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@aworan
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aworan commented Oct 19, 2016

Monitor specs : http://h18000.www1.hp.com/products/quickspecs/archives_Division/11640_div_v4/11640_div.HTML

The result of dmesg is attached.
dmesg.txt
lategoodbye pushed a commit that referenced this issue Jan 6, 2018
@yonghong-song @borkmann
samples/bpf: add error checking for perf ioctl calls in bpf loader
0ec9552 
load_bpf_file() should fail if ioctl with command
PERF_EVENT_IOC_ENABLE and PERF_EVENT_IOC_SET_BPF fails.
When they do fail, proper error messages are printed.

With this change, the below "syscall_tp" run shows that
the maximum number of bpf progs attaching to the same
perf tracepoint is indeed enforced.
  $ ./syscall_tp -i 64
  prog #0: map ids 4 5
  ...
  prog #63: map ids 382 383
  $ ./syscall_tp -i 65
  prog #0: map ids 4 5
  ...
  prog #64: map ids 388 389
  ioctl PERF_EVENT_IOC_SET_BPF failed err Argument list too long

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
@anholt
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anholt commented Feb 6, 2018

Sorry for ignoring this one for so long. Does this monitor work well on other Linux systems with the same HDMI cable? We're getting the same EDID contents each time, so it seems like the i2c transfer is working.

@aworan
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aworan commented Feb 23, 2018

Hi Eric,
I don't have that monitor anymore, but it work with no issues with the same HDMI cable and the rapsberry pi with raspbian and the closed source driver.
It worked too with ubuntu mate for rapsberry pi and the closed source driver.

@anholt
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anholt commented Feb 23, 2018

OK, I'll have to close this down then, if we can't do tests on it. Sorry about that!

@anholt anholt closed this as completed Feb 23, 2018
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@anholt @aworan