#
from __future__ import print_function
+import time
import binascii
import copy
except:
return False
+def call_and_retry(*args, **kwargs):
+ """Wrapper around subprocess.call that retries failed calls.
+
+ This function calls subprocess.call and on non-zero exit states,
+ waits a second and then retries once. This mitigates #47,
+ a timing issue with some drivers.
+ """
+ kwargs_redirected = dict(kwargs)
+ if hasattr(subprocess, "DEVNULL"):
+ kwargs_redirected["stdout"] = getattr(subprocess, "DEVNULL")
+ else:
+ kwargs_redirected["stdout"] = open(os.devnull, "w")
+ kwargs_redirected["stderr"] = kwargs_redirected["stdout"]
+ retval = subprocess.call(*args, **kwargs_redirected)
+ if retval != 0:
+ time.sleep(1)
+ retval = subprocess.call(*args, **kwargs)
+ return retval
+
def apply_configuration(new_configuration, current_configuration, dry_run=False):
"Apply a configuration"
outputs = sorted(new_configuration.keys(), key=lambda x: new_configuration[x].sort_key)
# Perform pe-change auxiliary changes
if auxiliary_changes_pre:
argv = base_argv + list(chain.from_iterable(auxiliary_changes_pre))
- if subprocess.call(argv) != 0:
+ if call_and_retry(argv) != 0:
raise AutorandrException("Command failed: %s" % " ".join(argv))
# Disable unused outputs, but make sure that there always is at least one active screen
disable_keep = 0 if remain_active_count else 1
if len(disable_outputs) > disable_keep:
- if subprocess.call(base_argv + list(chain.from_iterable(disable_outputs[:-1] if disable_keep else disable_outputs))) != 0:
+ if call_and_retry(base_argv + list(chain.from_iterable(disable_outputs[:-1] if disable_keep else disable_outputs))) != 0:
# Disabling the outputs failed. Retry with the next command:
# Sometimes disabling of outputs fails due to an invalid RRSetScreenSize.
# This does not occur if simultaneously the primary screen is reset.
operations = disable_outputs + enable_outputs
for index in range(0, len(operations), 2):
argv = base_argv + list(chain.from_iterable(operations[index:index+2]))
- if subprocess.call(argv) != 0:
+ if call_and_retry(argv) != 0:
raise AutorandrException("Command failed: %s" % " ".join(argv))
def is_equal_configuration(source_configuration, target_configuration):
"PROFILE_FOLDER": scripts_path,
}
exec_scripts(scripts_path, "preswitch", script_metadata)
+ if "--debug" in options:
+ print("Going to run:")
+ apply_configuration(load_config, config, True)
apply_configuration(load_config, config, False)
exec_scripts(scripts_path, "postswitch", script_metadata)
except Exception as e: